129513210456 has 96 divisors (see below), whose sum is σ = 376727952240. Its totient is φ = 36995680512.

The previous prime is 129513210403. The next prime is 129513210467. The reversal of 129513210456 is 654012315921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7203430 + ... + 7221386.

Almost surely, 2^129513210456 is an apocalyptic number.

It is an amenable number.

129513210456 is an abundant number, since it is smaller than the sum of its proper divisors (247214741784).

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

129513210456 is a wasteful number, since it uses less digits than its factorization.

129513210456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24113 (or 24102 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 129513210456 in words is "one hundred twenty-nine billion, five hundred thirteen million, two hundred ten thousand, four hundred fifty-six".