42275627329961 has 2 divisors, whose sum is σ = 42275627329962. Its totient is φ = 42275627329960.

The previous prime is 42275627329849. The next prime is 42275627329993. The reversal of 42275627329961 is 16992372657224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41437543840000 + 838083489961 = 6437200^2 + 915469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42275627329961 is a prime.

It is a super-2 number, since 2×42275627329961² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42275627329261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21137813664980 + 21137813664981.

It is an arithmetic number, because the mean of its divisors is an integer number (21137813664981).

Almost surely, 2^{42275627329961} is an apocalyptic number.

It is an amenable number.

42275627329961 is a deficient number, since it is larger than the sum of its proper divisors (1).

42275627329961 is an equidigital number, since it uses as much as digits as its factorization.

42275627329961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137168640, while the sum is 65.

The spelling of 42275627329961 in words is "forty-two trillion, two hundred seventy-five billion, six hundred twenty-seven million, three hundred twenty-nine thousand, nine hundred sixty-one".