138465260437 has 32 divisors (see below), whose sum is σ = 167290905600. Its totient is φ = 112083326208.

The previous prime is 138465260419. The next prime is 138465260441. The reversal of 138465260437 is 734062564831.

It is not a de Polignac number, because 138465260437 - 2²⁷ = 138331042709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138465260447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19584139 + ... + 19591207.

It is an arithmetic number, because the mean of its divisors is an integer number (5227840800).

Almost surely, 2^138465260437 is an apocalyptic number.

It is an amenable number.

138465260437 is a deficient number, since it is larger than the sum of its proper divisors (28825645163).

138465260437 is a wasteful number, since it uses less digits than its factorization.

138465260437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9205.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 138465260437 in words is "one hundred thirty-eight billion, four hundred sixty-five million, two hundred sixty thousand, four hundred thirty-seven".