137626646020 has 48 divisors (see below), whose sum is σ = 308824472880. Its totient is φ = 51337027584.

The previous prime is 137626646011. The next prime is 137626646089. The reversal of 137626646020 is 20646626731.

It can be written as a sum of positive squares in 8 ways, for example, as 13141871044 + 124484774976 = 114638^2 + 352824^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819749 + ... + 1893868.

It is an arithmetic number, because the mean of its divisors is an integer number (6433843185).

Almost surely, 2^137626646020 is an apocalyptic number.

137626646020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137626646020 is an abundant number, since it is smaller than the sum of its proper divisors (171197826860).

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

137626646020 is a wasteful number, since it uses less digits than its factorization.

137626646020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713752 (or 3713750 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 137626646020 in words is "one hundred thirty-seven billion, six hundred twenty-six million, six hundred forty-six thousand, twenty".