129627361444 has 27 divisors (see below), whose sum is σ = 263894532993. Its totient is φ = 55552423248.

The previous prime is 129627361427. The next prime is 129627361537. The reversal of 129627361444 is 444163726921.

The square root of 129627361444 is 360038.

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

It can be written as a sum of positive squares in only one way, i.e., 77500992100 + 52126369344 = 278390^2 + 228312^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5027674 + ... + 5053390.

Almost surely, 2^129627361444 is an apocalyptic number.

129627361444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129627361444 is the 360038-th square number.

It is an amenable number.

129627361444 is an abundant number, since it is smaller than the sum of its proper divisors (134267171549).

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

129627361444 is an frugal number, since it uses more digits than its factorization.

129627361444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51452 (or 25726 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

Multiplying 129627361444 by its sum of digits (49), we get a square (6351740710756 = 2520266²).

129627361444 divided by its sum of digits (49) gives a square (2645456356 = 51434²).

The spelling of 129627361444 in words is "one hundred twenty-nine billion, six hundred twenty-seven million, three hundred sixty-one thousand, four hundred forty-four".