57669965421 has 4 divisors (see below), whose sum is σ = 76893287232. Its totient is φ = 38446643612.

The previous prime is 57669965393. The next prime is 57669965429. The reversal of 57669965421 is 12456996675.

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 a cyclic number.

It is not a de Polignac number, because 57669965421 - 2¹⁵ = 57669932653 is a prime.

It is a super-4 number, since 4×57669965421⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57669965429) 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, 9611660901 + ... + 9611660906.

It is an arithmetic number, because the mean of its divisors is an integer number (19223321808).

Almost surely, 2^57669965421 is an apocalyptic number.

It is an amenable number.

57669965421 is a deficient number, since it is larger than the sum of its proper divisors (19223321811).

57669965421 is a wasteful number, since it uses less digits than its factorization.

57669965421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19223321810.

The product of its digits is 24494400, while the sum is 60.

The spelling of 57669965421 in words is "fifty-seven billion, six hundred sixty-nine million, nine hundred sixty-five thousand, four hundred twenty-one".