74854979453 has 2 divisors, whose sum is σ = 74854979454. Its totient is φ = 74854979452.

The previous prime is 74854979447. The next prime is 74854979473. The reversal of 74854979453 is 35497945847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56585942884 + 18269036569 = 237878^2 + 135163^2 .

It is a cyclic number.

It is not a de Polignac number, because 74854979453 - 2²⁶ = 74787870589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74854979453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74854979413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37427489726 + 37427489727.

It is an arithmetic number, because the mean of its divisors is an integer number (37427489727).

Almost surely, 2^74854979453 is an apocalyptic number.

It is an amenable number.

74854979453 is a deficient number, since it is larger than the sum of its proper divisors (1).

74854979453 is an equidigital number, since it uses as much as digits as its factorization.

74854979453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 152409600, while the sum is 65.

The spelling of 74854979453 in words is "seventy-four billion, eight hundred fifty-four million, nine hundred seventy-nine thousand, four hundred fifty-three".