65008720055013 has 32 divisors (see below), whose sum is σ = 102494236723200. Its totient is φ = 35860777208256.

The previous prime is 65008720054991. The next prime is 65008720055021. The reversal of 65008720055013 is 31055002780056.

It is not a de Polignac number, because 65008720055013 - 2¹² = 65008720050917 is a prime.

It is a super-2 number, since 2×65008720055013² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65008720055053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5498331 + ... + 12658952.

It is an arithmetic number, because the mean of its divisors is an integer number (3202944897600).

Almost surely, 2^{65008720055013} is an apocalyptic number.

It is an amenable number.

65008720055013 is a deficient number, since it is larger than the sum of its proper divisors (37485516668187).

65008720055013 is a wasteful number, since it uses less digits than its factorization.

65008720055013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18163201.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 65008720055013 in words is "sixty-five trillion, eight billion, seven hundred twenty million, fifty-five thousand, thirteen".