129377199937 has 2 divisors, whose sum is σ = 129377199938. Its totient is φ = 129377199936.

The previous prime is 129377199859. The next prime is 129377199943. The reversal of 129377199937 is 739991773921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103093008561 + 26284191376 = 321081^2 + 162124^2 .

It is a cyclic number.

It is not a de Polignac number, because 129377199937 - 2¹⁵ = 129377167169 is a prime.

It is not a weakly prime, because it can be changed into another prime (129377199977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64688599968 + 64688599969.

It is an arithmetic number, because the mean of its divisors is an integer number (64688599969).

Almost surely, 2^129377199937 is an apocalyptic number.

It is an amenable number.

129377199937 is a deficient number, since it is larger than the sum of its proper divisors (1).

129377199937 is an equidigital number, since it uses as much as digits as its factorization.

129377199937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40507614, while the sum is 67.

The spelling of 129377199937 in words is "one hundred twenty-nine billion, three hundred seventy-seven million, one hundred ninety-nine thousand, nine hundred thirty-seven".