129350981940 has 48 divisors (see below), whose sum is σ = 362198497920. Its totient is φ = 34492095360.

The previous prime is 129350981927. The next prime is 129350981941. The reversal of 129350981940 is 49189053921.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129350981941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2401626 + ... + 2454894.

It is an arithmetic number, because the mean of its divisors is an integer number (7545802040).

Almost surely, 2^129350981940 is an apocalyptic number.

129350981940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129350981940 is an abundant number, since it is smaller than the sum of its proper divisors (232847515980).

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

129350981940 is a wasteful number, since it uses less digits than its factorization.

129350981940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93752 (or 93750 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 129350981940 in words is "one hundred twenty-nine billion, three hundred fifty million, nine hundred eighty-one thousand, nine hundred forty".