138009973034 has 12 divisors (see below), whose sum is σ = 213908280642. Its totient is φ = 66779018280.

The previous prime is 138009973033. The next prime is 138009973043. The reversal of 138009973034 is 430379900831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 85910541025 + 52099432009 = 293105^2 + 228253^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138009973034.

It is not an unprimeable number, because it can be changed into a prime (138009973033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35900777 + ... + 35904620.

Almost surely, 2^138009973034 is an apocalyptic number.

138009973034 is a deficient number, since it is larger than the sum of its proper divisors (75898307608).

138009973034 is an equidigital number, since it uses as much as digits as its factorization.

138009973034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71805461 (or 71805430 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 138009973034 in words is "one hundred thirty-eight billion, nine million, nine hundred seventy-three thousand, thirty-four".