129774293971 has 12 divisors (see below), whose sum is σ = 150977003520. Its totient is φ = 111224005200.

The previous prime is 129774293951. The next prime is 129774293993. The reversal of 129774293971 is 179392477921.

It is not a de Polignac number, because 129774293971 - 2⁵ = 129774293939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129774293951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384046 + ... + 637996.

It is an arithmetic number, because the mean of its divisors is an integer number (12581416960).

Almost surely, 2^129774293971 is an apocalyptic number.

129774293971 is a deficient number, since it is larger than the sum of its proper divisors (21202709549).

129774293971 is a wasteful number, since it uses less digits than its factorization.

129774293971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264394 (or 264387 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 61.

The spelling of 129774293971 in words is "one hundred twenty-nine billion, seven hundred seventy-four million, two hundred ninety-three thousand, nine hundred seventy-one".