138236440676 has 6 divisors (see below), whose sum is σ = 241913771190. Its totient is φ = 69118220336.

The previous prime is 138236440633. The next prime is 138236440681. The reversal of 138236440676 is 676044632831.

It can be written as a sum of positive squares in only one way, i.e., 131565798400 + 6670642276 = 362720^2 + 81674^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17279555081 + ... + 17279555088.

It is an arithmetic number, because the mean of its divisors is an integer number (40318961865).

Almost surely, 2^138236440676 is an apocalyptic number.

It is an amenable number.

138236440676 is a deficient number, since it is larger than the sum of its proper divisors (103677330514).

138236440676 is a wasteful number, since it uses less digits than its factorization.

138236440676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34559110173 (or 34559110171 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 138236440676 in words is "one hundred thirty-eight billion, two hundred thirty-six million, four hundred forty thousand, six hundred seventy-six".