57621762881 has 4 divisors (see below), whose sum is σ = 58316001072. Its totient is φ = 56927524692.

The previous prime is 57621762853. The next prime is 57621762911. The reversal of 57621762881 is 18826712675.

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 57621762881 - 2²² = 57617568577 is a prime.

It is a super-2 number, since 2×57621762881² (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 (57621762811) 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, 347118971 + ... + 347119136.

It is an arithmetic number, because the mean of its divisors is an integer number (14579000268).

Almost surely, 2^57621762881 is an apocalyptic number.

It is an amenable number.

57621762881 is a deficient number, since it is larger than the sum of its proper divisors (694238191).

57621762881 is an equidigital number, since it uses as much as digits as its factorization.

57621762881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694238190.

The product of its digits is 2257920, while the sum is 53.

The spelling of 57621762881 in words is "fifty-seven billion, six hundred twenty-one million, seven hundred sixty-two thousand, eight hundred eighty-one".