57621170321287 has 2 divisors, whose sum is σ = 57621170321288. Its totient is φ = 57621170321286.

The previous prime is 57621170321233. The next prime is 57621170321291. The reversal of 57621170321287 is 78212307112675.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57621170321287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57621170721287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28810585160643 + 28810585160644.

It is an arithmetic number, because the mean of its divisors is an integer number (28810585160644).

Almost surely, 2^{57621170321287} is an apocalyptic number.

57621170321287 is a deficient number, since it is larger than the sum of its proper divisors (1).

57621170321287 is an equidigital number, since it uses as much as digits as its factorization.

57621170321287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 57621170321287 in words is "fifty-seven trillion, six hundred twenty-one billion, one hundred seventy million, three hundred twenty-one thousand, two hundred eighty-seven".