138754152540 has 72 divisors (see below), whose sum is σ = 421124099760. Its totient is φ = 36980315904.

The previous prime is 138754152487. The next prime is 138754152599. The reversal of 138754152540 is 45251457831.

138754152540 is a `hidden beast` number, since 1 + 3 + 8 + 7 + 54 + 1 + 52 + 540 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105976 + ... + 537344.

It is an arithmetic number, because the mean of its divisors is an integer number (5848945830).

Almost surely, 2^138754152540 is an apocalyptic number.

138754152540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138754152540 is an abundant number, since it is smaller than the sum of its proper divisors (282369947220).

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

138754152540 is a wasteful number, since it uses less digits than its factorization.

138754152540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433171 (or 433166 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 138754152540 in words is "one hundred thirty-eight billion, seven hundred fifty-four million, one hundred fifty-two thousand, five hundred forty".