42010645577 has 2 divisors, whose sum is σ = 42010645578. Its totient is φ = 42010645576.

The previous prime is 42010645553. The next prime is 42010645597. The reversal of 42010645577 is 77554601024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26341614601 + 15669030976 = 162301^2 + 125176^2 .

It is a cyclic number.

It is not a de Polignac number, because 42010645577 - 2⁸ = 42010645321 is a prime.

It is not a weakly prime, because it can be changed into another prime (42010645507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21005322788 + 21005322789.

It is an arithmetic number, because the mean of its divisors is an integer number (21005322789).

Almost surely, 2^42010645577 is an apocalyptic number.

It is an amenable number.

42010645577 is a deficient number, since it is larger than the sum of its proper divisors (1).

42010645577 is an equidigital number, since it uses as much as digits as its factorization.

42010645577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 42010645577 in words is "forty-two billion, ten million, six hundred forty-five thousand, five hundred seventy-seven".