65197253331 has 12 divisors (see below), whose sum is σ = 107627211952. Its totient is φ = 37255573296.

The previous prime is 65197253323. The next prime is 65197253369. The reversal of 65197253331 is 13335279156.

65197253331 is a `hidden beast` number, since 6 + 5 + 19 + 72 + 533 + 31 = 666.

It is not a de Polignac number, because 65197253331 - 2³ = 65197253323 is a prime.

It is a super-2 number, since 2×65197253331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65197252331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517438456 + ... + 517438581.

Almost surely, 2^65197253331 is an apocalyptic number.

65197253331 is a deficient number, since it is larger than the sum of its proper divisors (42429958621).

65197253331 is a wasteful number, since it uses less digits than its factorization.

65197253331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034877050 (or 1034877047 counting only the distinct ones).

The product of its digits is 510300, while the sum is 45.

The spelling of 65197253331 in words is "sixty-five billion, one hundred ninety-seven million, two hundred fifty-three thousand, three hundred thirty-one".