74717221890 has 32 divisors (see below), whose sum is σ = 182261030976. Its totient is φ = 19597959360.

The previous prime is 74717221879. The next prime is 74717221903. The reversal of 74717221890 is 9812271747.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20412712 + ... + 20416371.

It is an arithmetic number, because the mean of its divisors is an integer number (5695657218).

Almost surely, 2^74717221890 is an apocalyptic number.

74717221890 is an abundant number, since it is smaller than the sum of its proper divisors (107543809086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74717221890 is a wasteful number, since it uses less digits than its factorization.

74717221890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40829154.

The product of its (nonzero) digits is 395136, while the sum is 48.

The spelling of 74717221890 in words is "seventy-four billion, seven hundred seventeen million, two hundred twenty-one thousand, eight hundred ninety".