65197832939 has 4 divisors (see below), whose sum is σ = 66714061656. Its totient is φ = 63681604224.

The previous prime is 65197832933. The next prime is 65197832963. The reversal of 65197832939 is 93923879156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65197832939 - 2³² = 60902865643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65197832933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758114294 + ... + 758114379.

It is an arithmetic number, because the mean of its divisors is an integer number (16678515414).

Almost surely, 2^65197832939 is an apocalyptic number.

65197832939 is a deficient number, since it is larger than the sum of its proper divisors (1516228717).

65197832939 is a wasteful number, since it uses less digits than its factorization.

65197832939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516228716.

The product of its digits is 22044960, while the sum is 62.

The spelling of 65197832939 in words is "sixty-five billion, one hundred ninety-seven million, eight hundred thirty-two thousand, nine hundred thirty-nine".