129619387204 has 12 divisors (see below), whose sum is σ = 227227058044. Its totient is φ = 64697370624.

The previous prime is 129619387193. The next prime is 129619387211. The reversal of 129619387204 is 402783916921.

It can be written as a sum of positive squares in 2 ways, for example, as 105579504900 + 24039882304 = 324930^2 + 155048^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28078149 + ... + 28082764.

Almost surely, 2^129619387204 is an apocalyptic number.

It is an amenable number.

129619387204 is a deficient number, since it is larger than the sum of its proper divisors (97607670840).

129619387204 is a wasteful number, since it uses less digits than its factorization.

129619387204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56161494 (or 56161492 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 129619387204 in words is "one hundred twenty-nine billion, six hundred nineteen million, three hundred eighty-seven thousand, two hundred four".