65117662207 has 16 divisors (see below), whose sum is σ = 70581450240. Its totient is φ = 59719195872.

The previous prime is 65117662193. The next prime is 65117662213. The reversal of 65117662207 is 70226671156.

It is a cyclic number.

It is not a de Polignac number, because 65117662207 - 2⁷ = 65117662079 is a prime.

It is a super-2 number, since 2×65117662207² (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 (65117662217) 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, 5254144 + ... + 5266522.

It is an arithmetic number, because the mean of its divisors is an integer number (4411340640).

Almost surely, 2^65117662207 is an apocalyptic number.

65117662207 is a deficient number, since it is larger than the sum of its proper divisors (5463788033).

65117662207 is a wasteful number, since it uses less digits than its factorization.

65117662207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14982.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 65117662207 in words is "sixty-five billion, one hundred seventeen million, six hundred sixty-two thousand, two hundred seven".