138573573406 has 16 divisors (see below), whose sum is σ = 216299318400. Its totient is φ = 66528421848.

The previous prime is 138573573389. The next prime is 138573573409. The reversal of 138573573406 is 604375375831.

It is a super-3 number, since 3×138573573406³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138573573409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13650186 + ... + 13660333.

It is an arithmetic number, because the mean of its divisors is an integer number (13518707400).

Almost surely, 2^138573573406 is an apocalyptic number.

138573573406 is a deficient number, since it is larger than the sum of its proper divisors (77725744994).

138573573406 is a wasteful number, since it uses less digits than its factorization.

138573573406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27310623.

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 138573573406 in words is "one hundred thirty-eight billion, five hundred seventy-three million, five hundred seventy-three thousand, four hundred six".