138536455580 has 24 divisors (see below), whose sum is σ = 294609174720. Its totient is φ = 54713131200.

The previous prime is 138536455487. The next prime is 138536455601. The reversal of 138536455580 is 85554635831.

It is a super-3 number, since 3×138536455580³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43839071 + ... + 43842230.

It is an arithmetic number, because the mean of its divisors is an integer number (12275382280).

Almost surely, 2^138536455580 is an apocalyptic number.

138536455580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138536455580 is an abundant number, since it is smaller than the sum of its proper divisors (156072719140).

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

138536455580 is a wasteful number, since it uses less digits than its factorization.

138536455580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87681389 (or 87681387 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 53.

The spelling of 138536455580 in words is "one hundred thirty-eight billion, five hundred thirty-six million, four hundred fifty-five thousand, five hundred eighty".