74157912885 has 64 divisors (see below), whose sum is σ = 136599183360. Its totient is φ = 33652661760.

The previous prime is 74157912853. The next prime is 74157912889. The reversal of 74157912885 is 58821975147.

It is a happy number.

It is not a de Polignac number, because 74157912885 - 2⁵ = 74157912853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74157912889) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8048161 + ... + 8057369.

It is an arithmetic number, because the mean of its divisors is an integer number (2134362240).

Almost surely, 2^74157912885 is an apocalyptic number.

It is an amenable number.

74157912885 is a deficient number, since it is larger than the sum of its proper divisors (62441270475).

74157912885 is a wasteful number, since it uses less digits than its factorization.

74157912885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778.

The product of its digits is 5644800, while the sum is 57.

The spelling of 74157912885 in words is "seventy-four billion, one hundred fifty-seven million, nine hundred twelve thousand, eight hundred eighty-five".