129624481156 has 27 divisors (see below), whose sum is σ = 234436773207. Its totient is φ = 62710722120.

The previous prime is 129624481127. The next prime is 129624481157. The reversal of 129624481156 is 651184426921.

The square root of 129624481156 is 360034.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×129624481156² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129624481157) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22319205 + ... + 22325011.

Almost surely, 2^129624481156 is an apocalyptic number.

129624481156 is the 360034-th square number.

It is an amenable number.

129624481156 is a deficient number, since it is larger than the sum of its proper divisors (104812292051).

129624481156 is an frugal number, since it uses more digits than its factorization.

129624481156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11680 (or 5840 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

Multiplying 129624481156 by its sum of digits (49), we get a square (6351599576644 = 2520238²).

The spelling of 129624481156 in words is "one hundred twenty-nine billion, six hundred twenty-four million, four hundred eighty-one thousand, one hundred fifty-six".