57561888972139 has 2 divisors, whose sum is σ = 57561888972140. Its totient is φ = 57561888972138.

The previous prime is 57561888972097. The next prime is 57561888972221. The reversal of 57561888972139 is 93127988816575.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57561888972139 - 2¹³ = 57561888963947 is a prime.

It is not a weakly prime, because it can be changed into another prime (57561888972239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28780944486069 + 28780944486070.

It is an arithmetic number, because the mean of its divisors is an integer number (28780944486070).

Almost surely, 2^{57561888972139} is an apocalyptic number.

57561888972139 is a deficient number, since it is larger than the sum of its proper divisors (1).

57561888972139 is an equidigital number, since it uses as much as digits as its factorization.

57561888972139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1828915200, while the sum is 79.

The spelling of 57561888972139 in words is "fifty-seven trillion, five hundred sixty-one billion, eight hundred eighty-eight million, nine hundred seventy-two thousand, one hundred thirty-nine".