65220515612137 has 16 divisors (see below), whose sum is σ = 69277348224000. Its totient is φ = 61188377113600.

The previous prime is 65220515612093. The next prime is 65220515612209. The reversal of 65220515612137 is 73121651502256.

It is a de Polignac number, because none of the positive numbers 2^k-65220515612137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65220515615137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6485364 + ... + 13133962.

It is an arithmetic number, because the mean of its divisors is an integer number (4329834264000).

Almost surely, 2^{65220515612137} is an apocalyptic number.

It is an amenable number.

65220515612137 is a deficient number, since it is larger than the sum of its proper divisors (4056832611863).

65220515612137 is a wasteful number, since it uses less digits than its factorization.

65220515612137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650456.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 65220515612137 in words is "sixty-five trillion, two hundred twenty billion, five hundred fifteen million, six hundred twelve thousand, one hundred thirty-seven".