129452632532 has 24 divisors (see below), whose sum is σ = 233894099712. Its totient is φ = 62626536000.

The previous prime is 129452632487. The next prime is 129452632537. The reversal of 129452632532 is 235236254921.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129452632537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579032 + ... + 770832.

It is an arithmetic number, because the mean of its divisors is an integer number (9745587488).

Almost surely, 2^129452632532 is an apocalyptic number.

It is an amenable number.

129452632532 is a deficient number, since it is larger than the sum of its proper divisors (104441467180).

129452632532 is a wasteful number, since it uses less digits than its factorization.

129452632532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197279 (or 197277 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The spelling of 129452632532 in words is "one hundred twenty-nine billion, four hundred fifty-two million, six hundred thirty-two thousand, five hundred thirty-two".