12507758481 has 16 divisors (see below), whose sum is σ = 16954629120. Its totient is φ = 8199765120.

The previous prime is 12507758477. The next prime is 12507758507. The reversal of 12507758481 is 18485770521.

It is not a de Polignac number, because 12507758481 - 2² = 12507758477 is a prime.

It is a super-2 number, since 2×12507758481² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12507758481.

It is not an unprimeable number, because it can be changed into a prime (12507758401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1179280 + ... + 1189838.

It is an arithmetic number, because the mean of its divisors is an integer number (1059664320).

Almost surely, 2^12507758481 is an apocalyptic number.

It is an amenable number.

12507758481 is a deficient number, since it is larger than the sum of its proper divisors (4446870639).

12507758481 is a wasteful number, since it uses less digits than its factorization.

12507758481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17096.

The product of its (nonzero) digits is 627200, while the sum is 48.

The spelling of 12507758481 in words is "twelve billion, five hundred seven million, seven hundred fifty-eight thousand, four hundred eighty-one".