137920659920 has 40 divisors (see below), whose sum is σ = 322456995360. Its totient is φ = 54860055680.

The previous prime is 137920659889. The next prime is 137920659923. The reversal of 137920659920 is 29956029731.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137920659923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4801346 + ... + 4829985.

It is an arithmetic number, because the mean of its divisors is an integer number (8061424884).

Almost surely, 2^137920659920 is an apocalyptic number.

137920659920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137920659920 is an abundant number, since it is smaller than the sum of its proper divisors (184536335440).

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

137920659920 is a wasteful number, since it uses less digits than its factorization.

137920659920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9631523 (or 9631517 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 137920659920 in words is "one hundred thirty-seven billion, nine hundred twenty million, six hundred fifty-nine thousand, nine hundred twenty".