137117520321 has 8 divisors (see below), whose sum is σ = 182843104704. Its totient is φ = 91401808080.

The previous prime is 137117520317. The next prime is 137117520367. The reversal of 137117520321 is 123025711731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137117520321 - 2² = 137117520317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137117520301) 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, 2435565 + ... + 2491226.

It is an arithmetic number, because the mean of its divisors is an integer number (22855388088).

Almost surely, 2^137117520321 is an apocalyptic number.

It is an amenable number.

137117520321 is a deficient number, since it is larger than the sum of its proper divisors (45725584383).

137117520321 is an equidigital number, since it uses as much as digits as its factorization.

137117520321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936071.

The product of its (nonzero) digits is 8820, while the sum is 33.

The spelling of 137117520321 in words is "one hundred thirty-seven billion, one hundred seventeen million, five hundred twenty thousand, three hundred twenty-one".