129939322464 has 72 divisors (see below), whose sum is σ = 422302804560. Its totient is φ = 37125520128.

The previous prime is 129939322463. The next prime is 129939322477. The reversal of 129939322464 is 464223939921.

129939322464 is a `hidden beast` number, since 1 + 2 + 9 + 9 + 393 + 2 + 246 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 129939322464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129939322463) 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, 32224999 + ... + 32229030.

It is an arithmetic number, because the mean of its divisors is an integer number (5865316730).

Almost surely, 2^129939322464 is an apocalyptic number.

129939322464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129939322464 is an abundant number, since it is smaller than the sum of its proper divisors (292363482096).

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

129939322464 is a wasteful number, since it uses less digits than its factorization.

129939322464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64454052 (or 64454041 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The spelling of 129939322464 in words is "one hundred twenty-nine billion, nine hundred thirty-nine million, three hundred twenty-two thousand, four hundred sixty-four".