129910774772 has 24 divisors (see below), whose sum is σ = 228756332616. Its totient is φ = 64552992768.

The previous prime is 129910774769. The next prime is 129910774793. The reversal of 129910774772 is 277477019921.

It can be written as a sum of positive squares in 4 ways, for example, as 22501200016 + 107409574756 = 150004^2 + 327734^2 .

It is a super-2 number, since 2×129910774772² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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, 299198 + ... + 591050.

It is an arithmetic number, because the mean of its divisors is an integer number (9531513859).

Almost surely, 2^129910774772 is an apocalyptic number.

It is an amenable number.

129910774772 is a deficient number, since it is larger than the sum of its proper divisors (98845557844).

129910774772 is a wasteful number, since it uses less digits than its factorization.

129910774772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292547 (or 292545 counting only the distinct ones).

The product of its (nonzero) digits is 3111696, while the sum is 56.

The spelling of 129910774772 in words is "one hundred twenty-nine billion, nine hundred ten million, seven hundred seventy-four thousand, seven hundred seventy-two".