74729220827 has 16 divisors (see below), whose sum is σ = 77863550400. Its totient is φ = 71654446080.

The previous prime is 74729220821. The next prime is 74729220889. The reversal of 74729220827 is 72802292747.

It is a cyclic number.

It is not a de Polignac number, because 74729220827 - 2²⁰ = 74728172251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74729220821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8110199 + ... + 8119407.

It is an arithmetic number, because the mean of its divisors is an integer number (4866471900).

Almost surely, 2^74729220827 is an apocalyptic number.

74729220827 is a deficient number, since it is larger than the sum of its proper divisors (3134329573).

74729220827 is a wasteful number, since it uses less digits than its factorization.

74729220827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12406.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 74729220827 in words is "seventy-four billion, seven hundred twenty-nine million, two hundred twenty thousand, eight hundred twenty-seven".