138573573465 has 32 divisors (see below), whose sum is σ = 233250710400. Its totient is φ = 70147965440.

The previous prime is 138573573431. The next prime is 138573573469. The reversal of 138573573465 is 564375375831.

It is not a de Polignac number, because 138573573465 - 2⁹ = 138573572953 is a prime.

It is a super-3 number, since 3×138573573465³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (138573573469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2673996 + ... + 2725325.

It is an arithmetic number, because the mean of its divisors is an integer number (7289084700).

Almost surely, 2^138573573465 is an apocalyptic number.

138573573465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138573573465 is a deficient number, since it is larger than the sum of its proper divisors (94677136935).

138573573465 is a wasteful number, since it uses less digits than its factorization.

138573573465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399417.

The product of its digits is 31752000, while the sum is 57.

The spelling of 138573573465 in words is "one hundred thirty-eight billion, five hundred seventy-three million, five hundred seventy-three thousand, four hundred sixty-five".