65497740969 has 4 divisors (see below), whose sum is σ = 87330321296. Its totient is φ = 43665160644.

The previous prime is 65497740961. The next prime is 65497740983. The reversal of 65497740969 is 96904779456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65497740969 - 2³ = 65497740961 is a prime.

It is a super-2 number, since 2×65497740969² (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 (65497740961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10916290159 + ... + 10916290164.

It is an arithmetic number, because the mean of its divisors is an integer number (21832580324).

Almost surely, 2^65497740969 is an apocalyptic number.

It is an amenable number.

65497740969 is a deficient number, since it is larger than the sum of its proper divisors (21832580327).

65497740969 is a wasteful number, since it uses less digits than its factorization.

65497740969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21832580326.

The product of its (nonzero) digits is 102876480, while the sum is 66.

The spelling of 65497740969 in words is "sixty-five billion, four hundred ninety-seven million, seven hundred forty thousand, nine hundred sixty-nine".