57421951567 has 2 divisors, whose sum is σ = 57421951568. Its totient is φ = 57421951566.

The previous prime is 57421951549. The next prime is 57421951591. The reversal of 57421951567 is 76515912475.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57421951567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57421951667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28710975783 + 28710975784.

It is an arithmetic number, because the mean of its divisors is an integer number (28710975784).

Almost surely, 2^57421951567 is an apocalyptic number.

57421951567 is a deficient number, since it is larger than the sum of its proper divisors (1).

57421951567 is an equidigital number, since it uses as much as digits as its factorization.

57421951567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646000, while the sum is 52.

The spelling of 57421951567 in words is "fifty-seven billion, four hundred twenty-one million, nine hundred fifty-one thousand, five hundred sixty-seven".