42370966375561 has 2 divisors, whose sum is σ = 42370966375562. Its totient is φ = 42370966375560.

The previous prime is 42370966375547. The next prime is 42370966375607. The reversal of 42370966375561 is 16557366907324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34924376799225 + 7446589576336 = 5909685^2 + 2728844^2 .

It is a cyclic number.

It is not a de Polignac number, because 42370966375561 - 2⁷ = 42370966375433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42370966375493 and 42370966375502.

It is not a weakly prime, because it can be changed into another prime (42370966375061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21185483187780 + 21185483187781.

It is an arithmetic number, because the mean of its divisors is an integer number (21185483187781).

Almost surely, 2^{42370966375561} is an apocalyptic number.

It is an amenable number.

42370966375561 is a deficient number, since it is larger than the sum of its proper divisors (1).

42370966375561 is an equidigital number, since it uses as much as digits as its factorization.

42370966375561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 171460800, while the sum is 64.

The spelling of 42370966375561 in words is "forty-two trillion, three hundred seventy billion, nine hundred sixty-six million, three hundred seventy-five thousand, five hundred sixty-one".