74878324628 has 12 divisors (see below), whose sum is σ = 131871700212. Its totient is φ = 37200696000.

The previous prime is 74878324601. The next prime is 74878324639. The reversal of 74878324628 is 82642387847.

It can be written as a sum of positive squares in 2 ways, for example, as 15375504004 + 59502820624 = 123998^2 + 243932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59615873 + ... + 59617128.

It is an arithmetic number, because the mean of its divisors is an integer number (10989308351).

Almost surely, 2^74878324628 is an apocalyptic number.

It is an amenable number.

74878324628 is a deficient number, since it is larger than the sum of its proper divisors (56993375584).

74878324628 is a wasteful number, since it uses less digits than its factorization.

74878324628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119233162 (or 119233160 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 59.

The spelling of 74878324628 in words is "seventy-four billion, eight hundred seventy-eight million, three hundred twenty-four thousand, six hundred twenty-eight".