138974948280 has 96 divisors (see below), whose sum is σ = 516192674400. Its totient is φ = 31765701888.

The previous prime is 138974948251. The next prime is 138974948291. The reversal of 138974948280 is 82849479831.

138974948280 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 74 + 9 + 482 + 80 = 666.

138974948280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27571875 + ... + 27576914.

It is an arithmetic number, because the mean of its divisors is an integer number (5377007025).

Almost surely, 2^138974948280 is an apocalyptic number.

138974948280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138974948280 is an abundant number, since it is smaller than the sum of its proper divisors (377217726120).

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

138974948280 is a wasteful number, since it uses less digits than its factorization.

138974948280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55148813 (or 55148806 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 138974948280 in words is "one hundred thirty-eight billion, nine hundred seventy-four million, nine hundred forty-eight thousand, two hundred eighty".