129649962900 has 36 divisors (see below), whose sum is σ = 375120560192. Its totient is φ = 34573323360.

The previous prime is 129649962889. The next prime is 129649962901. The reversal of 129649962900 is 9269946921.

It is a super-2 number, since 2×129649962900² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129649962901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216082972 + ... + 216083571.

Almost surely, 2^129649962900 is an apocalyptic number.

129649962900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129649962900 is an abundant number, since it is smaller than the sum of its proper divisors (245470597292).

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

129649962900 is a wasteful number, since it uses less digits than its factorization.

129649962900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432166560 (or 432166553 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 57.

The spelling of 129649962900 in words is "one hundred twenty-nine billion, six hundred forty-nine million, nine hundred sixty-two thousand, nine hundred".