138076470081 has 48 divisors (see below), whose sum is σ = 225510442560. Its totient is φ = 80641733760.

The previous prime is 138076470071. The next prime is 138076470097. The reversal of 138076470081 is 180074670831.

138076470081 is a `hidden beast` number, since 1 + 38 + 0 + 76 + 470 + 0 + 81 = 666.

It is not a de Polignac number, because 138076470081 - 2³⁴ = 120896600897 is a prime.

It is a super-2 number, since 2×138076470081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138076470041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1455555 + ... + 1547511.

It is an arithmetic number, because the mean of its divisors is an integer number (4698134220).

Almost surely, 2^138076470081 is an apocalyptic number.

138076470081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

138076470081 is a deficient number, since it is larger than the sum of its proper divisors (87433972479).

138076470081 is a wasteful number, since it uses less digits than its factorization.

138076470081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92526 (or 92523 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 138076470081 in words is "one hundred thirty-eight billion, seventy-six million, four hundred seventy thousand, eighty-one".