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10512454421 = 74731952749
BaseRepresentation
bin10011100101001011…
…10101001100010101
31000010122001000102202
421302211311030111
5133012142020141
64455050214245
7521336250110
oct116245651425
930118030382
1010512454421
114505008667
122054724385
13cb6c13341
1471a23b577
15417d8649b
hex272975315

10512454421 has 8 divisors (see below), whose sum is σ = 12269856000. Its totient is φ = 8818958448.

The previous prime is 10512454399. The next prime is 10512454427. The reversal of 10512454421 is 12445421501.

It is a happy number.

10512454421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10512454421 - 26 = 10512454357 is a prime.

It is a super-2 number, since 2×105124544212 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10512454427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15976046 + ... + 15976703.

It is an arithmetic number, because the mean of its divisors is an integer number (1533732000).

Almost surely, 210512454421 is an apocalyptic number.

It is an amenable number.

10512454421 is a deficient number, since it is larger than the sum of its proper divisors (1757401579).

10512454421 is an equidigital number, since it uses as much as digits as its factorization.

10512454421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31952803.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 10512454421 its reverse (12445421501), we get a palindrome (22957875922).

The spelling of 10512454421 in words is "ten billion, five hundred twelve million, four hundred fifty-four thousand, four hundred twenty-one".

Divisors: 1 7 47 329 31952749 223669243 1501779203 10512454421