129515752036 has 18 divisors (see below), whose sum is σ = 249130507430. Its totient is φ = 58870796160.

The previous prime is 129515752031. The next prime is 129515752039. The reversal of 129515752036 is 630257515921.

It can be written as a sum of positive squares in only one way, i.e., 109598075136 + 19917676900 = 331056^2 + 141130^2 .

It is not an unprimeable number, because it can be changed into a prime (129515752031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133796781 + ... + 133797748.

Almost surely, 2^129515752036 is an apocalyptic number.

It is an amenable number.

129515752036 is a deficient number, since it is larger than the sum of its proper divisors (119614755394).

129515752036 is a wasteful number, since it uses less digits than its factorization.

129515752036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267594555 (or 267594542 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 46.

The spelling of 129515752036 in words is "one hundred twenty-nine billion, five hundred fifteen million, seven hundred fifty-two thousand, thirty-six".