57678478577 has 8 divisors (see below), whose sum is σ = 61757526600. Its totient is φ = 53675674624.

The previous prime is 57678478553. The next prime is 57678478591. The reversal of 57678478577 is 77587487675.

It can be written as a sum of positive squares in 4 ways, for example, as 958769296 + 56719709281 = 30964^2 + 238159^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57678478577 - 2¹⁰ = 57678477553 is a prime.

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 57678478577.

It is not an unprimeable number, because it can be changed into a prime (57678478177) 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, 19059452 + ... + 19062477.

It is an arithmetic number, because the mean of its divisors is an integer number (7719690825).

Almost surely, 2^57678478577 is an apocalyptic number.

It is an amenable number.

57678478577 is a deficient number, since it is larger than the sum of its proper divisors (4079048023).

57678478577 is a wasteful number, since it uses less digits than its factorization.

57678478577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38122035.

The product of its digits is 645388800, while the sum is 71.

The spelling of 57678478577 in words is "fifty-seven billion, six hundred seventy-eight million, four hundred seventy-eight thousand, five hundred seventy-seven".