74866863774097 has 4 divisors (see below), whose sum is σ = 74943493113636. Its totient is φ = 74790234434560.

The previous prime is 74866863774049. The next prime is 74866863774139. The reversal of 74866863774097 is 79047736866847.

It is a Cunningham number, because it is equal to 8652564²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70042906058896 + 4823957715201 = 8369164^2 + 2196351^2 .

It is a cyclic number.

It is not a de Polignac number, because 74866863774097 - 2¹⁹ = 74866863249809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74866863774097.

It is not an unprimeable number, because it can be changed into a prime (74866863774697) 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 in 3 ways as a sum of consecutive naturals, for example, 38314668304 + ... + 38314670257.

It is an arithmetic number, because the mean of its divisors is an integer number (18735873278409).

Almost surely, 2^{74866863774097} is an apocalyptic number.

It is an amenable number.

74866863774097 is a deficient number, since it is larger than the sum of its proper divisors (76629339539).

74866863774097 is an equidigital number, since it uses as much as digits as its factorization.

74866863774097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76629339538.

The product of its (nonzero) digits is 14338695168, while the sum is 82.

The spelling of 74866863774097 in words is "seventy-four trillion, eight hundred sixty-six billion, eight hundred sixty-three million, seven hundred seventy-four thousand, ninety-seven".