65975038191 has 8 divisors (see below), whose sum is σ = 97740797360. Its totient is φ = 43983358776.

The previous prime is 65975038177. The next prime is 65975038219. The reversal of 65975038191 is 19183057956.

65975038191 is a `hidden beast` number, since 6 + 59 + 7 + 503 + 81 + 9 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-65975038191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65975038121) 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, 1221759940 + ... + 1221759993.

It is an arithmetic number, because the mean of its divisors is an integer number (12217599670).

Almost surely, 2^65975038191 is an apocalyptic number.

65975038191 is a deficient number, since it is larger than the sum of its proper divisors (31765759169).

65975038191 is a wasteful number, since it uses less digits than its factorization.

65975038191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443519942 (or 2443519936 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 54.

The spelling of 65975038191 in words is "sixty-five billion, nine hundred seventy-five million, thirty-eight thousand, one hundred ninety-one".