65457023669 has 8 divisors (see below), whose sum is σ = 70021948248. Its totient is φ = 60971489280.

The previous prime is 65457023651. The next prime is 65457023689. The reversal of 65457023669 is 96632075456.

It can be written as a sum of positive squares in 4 ways, for example, as 7249671025 + 58207352644 = 85145^2 + 241262^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65457023669 is a prime.

It is a super-2 number, since 2×65457023669² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65457023669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65457023629) 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, 19845842 + ... + 19849139.

It is an arithmetic number, because the mean of its divisors is an integer number (8752743531).

Almost surely, 2^65457023669 is an apocalyptic number.

It is an amenable number.

65457023669 is a deficient number, since it is larger than the sum of its proper divisors (4564924579).

65457023669 is a wasteful number, since it uses less digits than its factorization.

65457023669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39695095.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 65457023669 in words is "sixty-five billion, four hundred fifty-seven million, twenty-three thousand, six hundred sixty-nine".