42211563577 has 2 divisors, whose sum is σ = 42211563578. Its totient is φ = 42211563576.

The previous prime is 42211563551. The next prime is 42211563587. The reversal of 42211563577 is 77536511224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29743831296 + 12467732281 = 172464^2 + 111659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42211563577 is a prime.

It is a super-2 number, since 2×42211563577² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42211563587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105781788 + 21105781789.

It is an arithmetic number, because the mean of its divisors is an integer number (21105781789).

Almost surely, 2^42211563577 is an apocalyptic number.

It is an amenable number.

42211563577 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211563577 is an equidigital number, since it uses as much as digits as its factorization.

42211563577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 43.

The spelling of 42211563577 in words is "forty-two billion, two hundred eleven million, five hundred sixty-three thousand, five hundred seventy-seven".