137644431094808 has 48 divisors (see below), whose sum is σ = 297143511919560. Its totient is φ = 59272721510400.

The previous prime is 137644431094799. The next prime is 137644431094837. The reversal of 137644431094808 is 808490134446731.

It is a super-2 number, since 2×137644431094808² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 2166368873 + ... + 2166432408.

Almost surely, 2^{137644431094808} is an apocalyptic number.

It is an amenable number.

137644431094808 is an abundant number, since it is smaller than the sum of its proper divisors (159499080824752).

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

137644431094808 is a wasteful number, since it uses less digits than its factorization.

137644431094808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332801336 (or 4332801313 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 62.

The spelling of 137644431094808 in words is "one hundred thirty-seven trillion, six hundred forty-four billion, four hundred thirty-one million, ninety-four thousand, eight hundred eight".