65012420997 has 24 divisors (see below), whose sum is σ = 94170437504. Its totient is φ = 43220088864.

The previous prime is 65012420989. The next prime is 65012420999. The reversal of 65012420997 is 79902421056.

It is not a de Polignac number, because 65012420997 - 2³ = 65012420989 is a prime.

It is a super-2 number, since 2×65012420997² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65012420999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6758163 + ... + 6767775.

Almost surely, 2^65012420997 is an apocalyptic number.

It is an amenable number.

65012420997 is a deficient number, since it is larger than the sum of its proper divisors (29158016507).

65012420997 is a wasteful number, since it uses less digits than its factorization.

65012420997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11649 (or 11646 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 65012420997 in words is "sixty-five billion, twelve million, four hundred twenty thousand, nine hundred ninety-seven".