12657340052 has 24 divisors (see below), whose sum is σ = 26131284480. Its totient is φ = 5249587680.

The previous prime is 12657340043. The next prime is 12657340079. The reversal of 12657340052 is 25004375621.

It is a junction number, because it is equal to n+sod(n) for n = 12657339994 and 12657340021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7290227 + ... + 7291962.

It is an arithmetic number, because the mean of its divisors is an integer number (1088803520).

Almost surely, 2^12657340052 is an apocalyptic number.

It is an amenable number.

12657340052 is an abundant number, since it is smaller than the sum of its proper divisors (13473944428).

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

12657340052 is a wasteful number, since it uses less digits than its factorization.

12657340052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14582231 (or 14582229 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 12657340052 in words is "twelve billion, six hundred fifty-seven million, three hundred forty thousand, fifty-two".