42275659961 has 2 divisors, whose sum is σ = 42275659962. Its totient is φ = 42275659960.

The previous prime is 42275659949. The next prime is 42275659967. The reversal of 42275659961 is 16995657224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24856675600 + 17418984361 = 157660^2 + 131981^2 .

It is a cyclic number.

It is not a de Polignac number, because 42275659961 - 2³⁰ = 41201918137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42275659897 and 42275659906.

It is not a weakly prime, because it can be changed into another prime (42275659967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21137829980 + 21137829981.

It is an arithmetic number, because the mean of its divisors is an integer number (21137829981).

Almost surely, 2^42275659961 is an apocalyptic number.

It is an amenable number.

42275659961 is a deficient number, since it is larger than the sum of its proper divisors (1).

42275659961 is an equidigital number, since it uses as much as digits as its factorization.

42275659961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 56.

The spelling of 42275659961 in words is "forty-two billion, two hundred seventy-five million, six hundred fifty-nine thousand, nine hundred sixty-one".