42884434961 has 2 divisors, whose sum is σ = 42884434962. Its totient is φ = 42884434960.

The previous prime is 42884434883. The next prime is 42884434987. The reversal of 42884434961 is 16943448824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36297489361 + 6586945600 = 190519^2 + 81160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42884434961 is a prime.

It is not a weakly prime, because it can be changed into another prime (42884436961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21442217480 + 21442217481.

It is an arithmetic number, because the mean of its divisors is an integer number (21442217481).

Almost surely, 2^42884434961 is an apocalyptic number.

It is an amenable number.

42884434961 is a deficient number, since it is larger than the sum of its proper divisors (1).

42884434961 is an equidigital number, since it uses as much as digits as its factorization.

42884434961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5308416, while the sum is 53.

The spelling of 42884434961 in words is "forty-two billion, eight hundred eighty-four million, four hundred thirty-four thousand, nine hundred sixty-one".