74589897915 has 48 divisors (see below), whose sum is σ = 139956110112. Its totient is φ = 36530860032.

The previous prime is 74589897913. The next prime is 74589897947. The reversal of 74589897915 is 51979898547.

It is a happy number.

74589897915 is a `hidden beast` number, since 7 + 458 + 9 + 89 + 7 + 91 + 5 = 666.

It is not a de Polignac number, because 74589897915 - 2¹ = 74589897913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74589897911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217417 + ... + 443226.

It is an arithmetic number, because the mean of its divisors is an integer number (2915752294).

Almost surely, 2^74589897915 is an apocalyptic number.

74589897915 is a deficient number, since it is larger than the sum of its proper divisors (65366212197).

74589897915 is a wasteful number, since it uses less digits than its factorization.

74589897915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660860 (or 660857 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 72.

The spelling of 74589897915 in words is "seventy-four billion, five hundred eighty-nine million, eight hundred ninety-seven thousand, nine hundred fifteen".