65917142923 has 4 divisors (see below), whose sum is σ = 65956079728. Its totient is φ = 65878206120.

The previous prime is 65917142903. The next prime is 65917142927. The reversal of 65917142923 is 32924171956.

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 65917142923 - 2⁵ = 65917142891 is a prime.

It is a super-2 number, since 2×65917142923² (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 (65917142927) 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, 19465863 + ... + 19469248.

It is an arithmetic number, because the mean of its divisors is an integer number (16489019932).

Almost surely, 2^65917142923 is an apocalyptic number.

65917142923 is a deficient number, since it is larger than the sum of its proper divisors (38936805).

65917142923 is a wasteful number, since it uses less digits than its factorization.

65917142923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38936804.

The product of its digits is 816480, while the sum is 49.

The spelling of 65917142923 in words is "sixty-five billion, nine hundred seventeen million, one hundred forty-two thousand, nine hundred twenty-three".