12758507136 has 48 divisors (see below), whose sum is σ = 36713936610. Its totient is φ = 4252835328.

The previous prime is 12758507131. The next prime is 12758507137. The reversal of 12758507136 is 63170585721.

It is a happy number.

12758507136 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 8 + 507 + 136 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9829532736 + 2928974400 = 99144^2 + 54120^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 12758507091 and 12758507100.

It is not an unprimeable number, because it can be changed into a prime (12758507131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5536395 + ... + 5538698.

Almost surely, 2^12758507136 is an apocalyptic number.

12758507136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12758507136 is an abundant number, since it is smaller than the sum of its proper divisors (23955429474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12758507136 is a wasteful number, since it uses less digits than its factorization.

12758507136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11075113 (or 11075098 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 12758507136 in words is "twelve billion, seven hundred fifty-eight million, five hundred seven thousand, one hundred thirty-six".