57642273461 has 2 divisors, whose sum is σ = 57642273462. Its totient is φ = 57642273460.

The previous prime is 57642273457. The next prime is 57642273467. The reversal of 57642273461 is 16437224675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44121002500 + 13521270961 = 210050^2 + 116281^2 .

It is a cyclic number.

It is not a de Polignac number, because 57642273461 - 2² = 57642273457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57642273467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28821136730 + 28821136731.

It is an arithmetic number, because the mean of its divisors is an integer number (28821136731).

Almost surely, 2^57642273461 is an apocalyptic number.

It is an amenable number.

57642273461 is a deficient number, since it is larger than the sum of its proper divisors (1).

57642273461 is an equidigital number, since it uses as much as digits as its factorization.

57642273461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 47.

The spelling of 57642273461 in words is "fifty-seven billion, six hundred forty-two million, two hundred seventy-three thousand, four hundred sixty-one".