138133717810 has 32 divisors (see below), whose sum is σ = 271273084992. Its totient is φ = 50225129280.

The previous prime is 138133717789. The next prime is 138133717847. The reversal of 138133717810 is 18717331831.

It is a super-2 number, since 2×138133717810² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1065432 + ... + 1188028.

It is an arithmetic number, because the mean of its divisors is an integer number (8477283906).

Almost surely, 2^138133717810 is an apocalyptic number.

138133717810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138133717810 is a deficient number, since it is larger than the sum of its proper divisors (133139367182).

138133717810 is a wasteful number, since it uses less digits than its factorization.

138133717810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132858.

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 138133717810 in words is "one hundred thirty-eight billion, one hundred thirty-three million, seven hundred seventeen thousand, eight hundred ten".