137897493908 has 12 divisors (see below), whose sum is σ = 241950696960. Its totient is φ = 68768723352.

The previous prime is 137897493893. The next prime is 137897493931. The reversal of 137897493908 is 809394798731.

It is a super-2 number, since 2×137897493908² (a number of 23 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 3 ways as a sum of consecutive naturals, for example, 45004178 + ... + 45007241.

It is an arithmetic number, because the mean of its divisors is an integer number (20162558080).

Almost surely, 2^137897493908 is an apocalyptic number.

It is an amenable number.

137897493908 is a deficient number, since it is larger than the sum of its proper divisors (104053203052).

137897493908 is a wasteful number, since it uses less digits than its factorization.

137897493908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90011806 (or 90011804 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 68.

The spelling of 137897493908 in words is "one hundred thirty-seven billion, eight hundred ninety-seven million, four hundred ninety-three thousand, nine hundred eight".