129899632570 has 16 divisors (see below), whose sum is σ = 233841450528. Its totient is φ = 51954939280.

The previous prime is 129899632567. The next prime is 129899632579. The reversal of 129899632570 is 75236998921.

It is a junction number, because it is equal to n+sod(n) for n = 129899632499 and 129899632508.

It is not an unprimeable number, because it can be changed into a prime (129899632579) 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, 502216 + ... + 715555.

It is an arithmetic number, because the mean of its divisors is an integer number (14615090658).

Almost surely, 2^129899632570 is an apocalyptic number.

129899632570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129899632570 is a deficient number, since it is larger than the sum of its proper divisors (103941817958).

129899632570 is a wasteful number, since it uses less digits than its factorization.

129899632570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228445.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 129899632570 in words is "one hundred twenty-nine billion, eight hundred ninety-nine million, six hundred thirty-two thousand, five hundred seventy".