74641838156693 has 2 divisors, whose sum is σ = 74641838156694. Its totient is φ = 74641838156692.

The previous prime is 74641838156687. The next prime is 74641838156741. The reversal of 74641838156693 is 39665183814647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40000350123889 + 34641488032804 = 6324583^2 + 5885702^2 .

It is a cyclic number.

It is not a de Polignac number, because 74641838156693 - 2³⁰ = 74640764414869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74641838156603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37320919078346 + 37320919078347.

It is an arithmetic number, because the mean of its divisors is an integer number (37320919078347).

Almost surely, 2^{74641838156693} is an apocalyptic number.

It is an amenable number.

74641838156693 is a deficient number, since it is larger than the sum of its proper divisors (1).

74641838156693 is an equidigital number, since it uses as much as digits as its factorization.

74641838156693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 627056640, while the sum is 71.

The spelling of 74641838156693 in words is "seventy-four trillion, six hundred forty-one billion, eight hundred thirty-eight million, one hundred fifty-six thousand, six hundred ninety-three".