74623885961 has 2 divisors, whose sum is σ = 74623885962. Its totient is φ = 74623885960.

The previous prime is 74623885883. The next prime is 74623885979. The reversal of 74623885961 is 16958832647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73736143936 + 887742025 = 271544^2 + 29795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74623885961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74623885961.

It is not a weakly prime, because it can be changed into another prime (74623885991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37311942980 + 37311942981.

It is an arithmetic number, because the mean of its divisors is an integer number (37311942981).

Almost surely, 2^74623885961 is an apocalyptic number.

It is an amenable number.

74623885961 is a deficient number, since it is larger than the sum of its proper divisors (1).

74623885961 is an equidigital number, since it uses as much as digits as its factorization.

74623885961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 59.

The spelling of 74623885961 in words is "seventy-four billion, six hundred twenty-three million, eight hundred eighty-five thousand, nine hundred sixty-one".