138977045235 has 24 divisors (see below), whose sum is σ = 275306909280. Its totient is φ = 63532363392.

The previous prime is 138977045227. The next prime is 138977045239. The reversal of 138977045235 is 532540779831.

138977045235 is a `hidden beast` number, since 1 + 3 + 8 + 97 + 70 + 452 + 35 = 666.

It is not a de Polignac number, because 138977045235 - 2³ = 138977045227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138977045239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220598170 + ... + 220598799.

It is an arithmetic number, because the mean of its divisors is an integer number (11471121220).

Almost surely, 2^138977045235 is an apocalyptic number.

138977045235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138977045235 is a deficient number, since it is larger than the sum of its proper divisors (136329864045).

138977045235 is a wasteful number, since it uses less digits than its factorization.

138977045235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441196987 (or 441196984 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 138977045235 in words is "one hundred thirty-eight billion, nine hundred seventy-seven million, forty-five thousand, two hundred thirty-five".