137920659918 has 32 divisors (see below), whose sum is σ = 276790693536. Its totient is φ = 45815397888.

The previous prime is 137920659889. The next prime is 137920659923. The reversal of 137920659918 is 819956029731.

It is a super-2 number, since 2×137920659918² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 11586946 + ... + 11598842.

It is an arithmetic number, because the mean of its divisors is an integer number (8649709173).

Almost surely, 2^137920659918 is an apocalyptic number.

137920659918 is an abundant number, since it is smaller than the sum of its proper divisors (138870033618).

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

137920659918 is a wasteful number, since it uses less digits than its factorization.

137920659918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18388.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The spelling of 137920659918 in words is "one hundred thirty-seven billion, nine hundred twenty million, six hundred fifty-nine thousand, nine hundred eighteen".