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10291807957 = 19599180917
BaseRepresentation
bin10011001010111000…
…01000011011010101
3222120020212000101111
421211130020123111
5132034200323312
64421125055021
7513016632004
oct114534103325
928506760344
1010291807957
114401503712
121bb2857471
13c802aa5c2
146d8c02c3b
154037ee8a7
hex2657086d5

10291807957 has 8 divisors (see below), whose sum is σ = 11017101600. Its totient is φ = 9584876304.

The previous prime is 10291807937. The next prime is 10291807979. The reversal of 10291807957 is 75970819201.

10291807957 is digitally balanced in base 3, 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 10291807957 - 219 = 10291283669 is a prime.

It is a super-2 number, since 2×102918079572 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10291807957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10291807937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4589338 + ... + 4591579.

It is an arithmetic number, because the mean of its divisors is an integer number (1377137700).

Almost surely, 210291807957 is an apocalyptic number.

It is an amenable number.

10291807957 is a deficient number, since it is larger than the sum of its proper divisors (725293643).

10291807957 is an equidigital number, since it uses as much as digits as its factorization.

10291807957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180995.

The product of its (nonzero) digits is 317520, while the sum is 49.

The spelling of 10291807957 in words is "ten billion, two hundred ninety-one million, eight hundred seven thousand, nine hundred fifty-seven".

Divisors: 1 19 59 1121 9180917 174437423 541674103 10291807957