138751262500 has 36 divisors (see below), whose sum is σ = 303498988884. Its totient is φ = 55500500000.

The previous prime is 138751262459. The next prime is 138751262543. The reversal of 138751262500 is 5262157831.

It can be written as a sum of positive squares in 6 ways, for example, as 99861056064 + 38890206436 = 316008^2 + 197206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5537551 + ... + 5562550.

It is an arithmetic number, because the mean of its divisors is an integer number (8430527469).

Almost surely, 2^138751262500 is an apocalyptic number.

138751262500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138751262500 is an abundant number, since it is smaller than the sum of its proper divisors (164747726384).

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

138751262500 is an equidigital number, since it uses as much as digits as its factorization.

138751262500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11100130 (or 11100108 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 138751262500 in words is "one hundred thirty-eight billion, seven hundred fifty-one million, two hundred sixty-two thousand, five hundred".