138055258530 has 48 divisors (see below), whose sum is σ = 410221341504. Its totient is φ = 31555487520.

The previous prime is 138055258519. The next prime is 138055258573. The reversal of 138055258530 is 35852550831.

138055258530 is a `hidden beast` number, since 1 + 38 + 0 + 5 + 5 + 2 + 585 + 30 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109567036 + ... + 109568295.

It is an arithmetic number, because the mean of its divisors is an integer number (8546277948).

Almost surely, 2^138055258530 is an apocalyptic number.

138055258530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138055258530 is an abundant number, since it is smaller than the sum of its proper divisors (272166082974).

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

138055258530 is a wasteful number, since it uses less digits than its factorization.

138055258530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219135351 (or 219135348 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 138055258530 in words is "one hundred thirty-eight billion, fifty-five million, two hundred fifty-eight thousand, five hundred thirty".