139357755648 has 108 divisors (see below), whose sum is σ = 409384308060. Its totient is φ = 45576081408.

The previous prime is 139357755643. The next prime is 139357755653. The reversal of 139357755648 is 846557753931.

139357755648 is a `hidden beast` number, since 1 + 3 + 9 + 3 + 5 + 77 + 556 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (139357755643) and next prime (139357755653).

It can be written as a sum of positive squares in 2 ways, for example, as 55748876544 + 83608879104 = 236112^2 + 289152^2 .

It is not an unprimeable number, because it can be changed into a prime (139357755643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448503 + ... + 692726.

It is an arithmetic number, because the mean of its divisors is an integer number (3790595445).

Almost surely, 2^139357755648 is an apocalyptic number.

139357755648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139357755648 is an abundant number, since it is smaller than the sum of its proper divisors (270026552412).

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

139357755648 is a wasteful number, since it uses less digits than its factorization.

139357755648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141304 (or 1141287 counting only the distinct ones).

The product of its digits is 95256000, while the sum is 63.

The spelling of 139357755648 in words is "one hundred thirty-nine billion, three hundred fifty-seven million, seven hundred fifty-five thousand, six hundred forty-eight".