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10121275507 = 72206556643
BaseRepresentation
bin10010110110100011…
…00110100001110011
3222010100222001211211
421123101212201303
5131212021304012
64352154020551
7505546264600
oct113321464163
928110861754
1010121275507
114324218102
121b65717757
13c53b6cb25
146c02d16a7
153e38666a7
hex25b466873

10121275507 has 6 divisors (see below), whose sum is σ = 11773728708. Its totient is φ = 8675378964.

The previous prime is 10121275481. The next prime is 10121275513. The reversal of 10121275507 is 70557212101.

10121275507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10121275507 - 27 = 10121275379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10121275607) 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 5 ways as a sum of consecutive naturals, for example, 103278273 + ... + 103278370.

It is an arithmetic number, because the mean of its divisors is an integer number (1962288118).

Almost surely, 210121275507 is an apocalyptic number.

10121275507 is a deficient number, since it is larger than the sum of its proper divisors (1652453201).

10121275507 is an equidigital number, since it uses as much as digits as its factorization.

10121275507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206556657 (or 206556650 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 31.

Adding to 10121275507 its reverse (70557212101), we get a palindrome (80678487608).

The spelling of 10121275507 in words is "ten billion, one hundred twenty-one million, two hundred seventy-five thousand, five hundred seven".

Divisors: 1 7 49 206556643 1445896501 10121275507