129051939744 has 720 divisors, whose sum is σ = 485873676288. Its totient is φ = 33291482112.

The previous prime is 129051939671. The next prime is 129051939761. The reversal of 129051939744 is 447939150921.

129051939744 is a `hidden beast` number, since 1 + 2 + 90 + 519 + 39 + 7 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 77601057 + ... + 77602719.

Almost surely, 2^129051939744 is an apocalyptic number.

129051939744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129051939744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242936838144).

129051939744 is an abundant number, since it is smaller than the sum of its proper divisors (356821736544).

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

129051939744 is a wasteful number, since it uses less digits than its factorization.

129051939744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 129051939744 in words is "one hundred twenty-nine billion, fifty-one million, nine hundred thirty-nine thousand, seven hundred forty-four".