56619502189577 has 2 divisors, whose sum is σ = 56619502189578. Its totient is φ = 56619502189576.

The previous prime is 56619502189561. The next prime is 56619502189603. The reversal of 56619502189577 is 77598120591665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49104551711296 + 7514950478281 = 7007464^2 + 2741341^2 .

It is a cyclic number.

It is not a de Polignac number, because 56619502189577 - 2⁴ = 56619502189561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56619502189577.

It is not a weakly prime, because it can be changed into another prime (56619502189277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28309751094788 + 28309751094789.

It is an arithmetic number, because the mean of its divisors is an integer number (28309751094789).

Almost surely, 2^{56619502189577} is an apocalyptic number.

It is an amenable number.

56619502189577 is a deficient number, since it is larger than the sum of its proper divisors (1).

56619502189577 is an equidigital number, since it uses as much as digits as its factorization.

56619502189577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768000, while the sum is 71.

The spelling of 56619502189577 in words is "fifty-six trillion, six hundred nineteen billion, five hundred two million, one hundred eighty-nine thousand, five hundred seventy-seven".