74327861693 has 2 divisors, whose sum is σ = 74327861694. Its totient is φ = 74327861692.

The previous prime is 74327861681. The next prime is 74327861717. The reversal of 74327861693 is 39616872347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51085944484 + 23241917209 = 226022^2 + 152453^2 .

It is a cyclic number.

It is not a de Polignac number, because 74327861693 - 2²² = 74323667389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74327861653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37163930846 + 37163930847.

It is an arithmetic number, because the mean of its divisors is an integer number (37163930847).

Almost surely, 2^74327861693 is an apocalyptic number.

It is an amenable number.

74327861693 is a deficient number, since it is larger than the sum of its proper divisors (1).

74327861693 is an equidigital number, since it uses as much as digits as its factorization.

74327861693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 56.

The spelling of 74327861693 in words is "seventy-four billion, three hundred twenty-seven million, eight hundred sixty-one thousand, six hundred ninety-three".