74642655740 has 24 divisors (see below), whose sum is σ = 156857965152. Its totient is φ = 29836416960.

The previous prime is 74642655733. The next prime is 74642655779. The reversal of 74642655740 is 4755624647.

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, 1260671 + ... + 1318550.

It is an arithmetic number, because the mean of its divisors is an integer number (6535748548).

Almost surely, 2^74642655740 is an apocalyptic number.

It is an amenable number.

74642655740 is an abundant number, since it is smaller than the sum of its proper divisors (82215309412).

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

74642655740 is a wasteful number, since it uses less digits than its factorization.

74642655740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580677 (or 2580675 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 50.

The spelling of 74642655740 in words is "seventy-four billion, six hundred forty-two million, six hundred fifty-five thousand, seven hundred forty".