138827540232 has 48 divisors (see below), whose sum is σ = 398108390940. Its totient is φ = 43553737728.

The previous prime is 138827540231. The next prime is 138827540233. The reversal of 138827540232 is 232045728831.

138827540232 is a `hidden beast` number, since 1 + 3 + 8 + 82 + 7 + 540 + 23 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (138827540231) and next prime (138827540233).

It can be written as a sum of positive squares in 2 ways, for example, as 127753345476 + 11074194756 = 357426^2 + 105234^2 .

It is a super-2 number, since 2×138827540232² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (138827540231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56709373 + ... + 56711820.

Almost surely, 2^138827540232 is an apocalyptic number.

138827540232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138827540232 is an abundant number, since it is smaller than the sum of its proper divisors (259280850708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138827540232 is a wasteful number, since it uses less digits than its factorization.

138827540232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113421222 (or 113421215 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 138827540232 in words is "one hundred thirty-eight billion, eight hundred twenty-seven million, five hundred forty thousand, two hundred thirty-two".