137500558521 has 16 divisors (see below), whose sum is σ = 185857075200. Its totient is φ = 90408069648.

The previous prime is 137500558513. The next prime is 137500558523. The reversal of 137500558521 is 125855005731.

It is not a de Polignac number, because 137500558521 - 2³ = 137500558513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137500558523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97851 + ... + 533456.

It is an arithmetic number, because the mean of its divisors is an integer number (11616067200).

Almost surely, 2^137500558521 is an apocalyptic number.

It is an amenable number.

137500558521 is a deficient number, since it is larger than the sum of its proper divisors (48356516679).

137500558521 is an equidigital number, since it uses as much as digits as its factorization.

137500558521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632308.

The product of its (nonzero) digits is 210000, while the sum is 42.

The spelling of 137500558521 in words is "one hundred thirty-seven billion, five hundred million, five hundred fifty-eight thousand, five hundred twenty-one".