137990548728 has 32 divisors (see below), whose sum is σ = 383307080400. Its totient is φ = 45996849504.

The previous prime is 137990548711. The next prime is 137990548793. The reversal of 137990548728 is 827845099731.

137990548728 is a `hidden beast` number, since 13 + 7 + 9 + 9 + 0 + 548 + 72 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319422351 + ... + 319422782.

Almost surely, 2^137990548728 is an apocalyptic number.

137990548728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

137990548728 is an abundant number, since it is smaller than the sum of its proper divisors (245316531672).

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

137990548728 is a wasteful number, since it uses less digits than its factorization.

137990548728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638845148 (or 638845138 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 137990548728 in words is "one hundred thirty-seven billion, nine hundred ninety million, five hundred forty-eight thousand, seven hundred twenty-eight".