74640244440 has 32 divisors (see below), whose sum is σ = 223920733680. Its totient is φ = 19904065152.

The previous prime is 74640244439. The next prime is 74640244453. The reversal of 74640244440 is 4444204647.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311000899 + ... + 311001138.

Almost surely, 2^74640244440 is an apocalyptic number.

It is an amenable number.

74640244440 is an abundant number, since it is smaller than the sum of its proper divisors (149280489240).

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

74640244440 is a wasteful number, since it uses less digits than its factorization.

74640244440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622002051 (or 622002047 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 39.

The spelling of 74640244440 in words is "seventy-four billion, six hundred forty million, two hundred forty-four thousand, four hundred forty".