74976634321 has 4 divisors (see below), whose sum is σ = 75749589412. Its totient is φ = 74203679232.

The previous prime is 74976634309. The next prime is 74976634339. The reversal of 74976634321 is 12343667947.

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 31885102096 + 43091532225 = 178564^2 + 207585^2 .

It is a cyclic number.

It is not a de Polignac number, because 74976634321 - 2³¹ = 72829150673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74976634391) 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, 386477400 + ... + 386477593.

It is an arithmetic number, because the mean of its divisors is an integer number (18937397353).

Almost surely, 2^74976634321 is an apocalyptic number.

It is an amenable number.

74976634321 is a deficient number, since it is larger than the sum of its proper divisors (772955091).

74976634321 is an equidigital number, since it uses as much as digits as its factorization.

74976634321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772955090.

The product of its digits is 4572288, while the sum is 52.

The spelling of 74976634321 in words is "seventy-four billion, nine hundred seventy-six million, six hundred thirty-four thousand, three hundred twenty-one".