74291020144 has 40 divisors (see below), whose sum is σ = 158222908800. Its totient is φ = 33510859200.

The previous prime is 74291020123. The next prime is 74291020157. The reversal of 74291020144 is 44102019247.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588044 + ... + 1634155.

It is an arithmetic number, because the mean of its divisors is an integer number (3955572720).

Almost surely, 2^74291020144 is an apocalyptic number.

It is an amenable number.

74291020144 is an abundant number, since it is smaller than the sum of its proper divisors (83931888656).

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

74291020144 is a wasteful number, since it uses less digits than its factorization.

74291020144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222349 (or 3222343 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 74291020144 in words is "seventy-four billion, two hundred ninety-one million, twenty thousand, one hundred forty-four".