74036191720 has 16 divisors (see below), whose sum is σ = 166581431460. Its totient is φ = 29614476672.

The previous prime is 74036191709. The next prime is 74036191763. The reversal of 74036191720 is 2719163047.

It can be written as a sum of positive squares in 2 ways, for example, as 70130691684 + 3905500036 = 264822^2 + 62494^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1850904793 = 74036191720 / (7 + 4 + 0 + 3 + 6 + 1 + 9 + 1 + 7 + 2 + 0).

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, 925452357 + ... + 925452436.

Almost surely, 2^74036191720 is an apocalyptic number.

It is an amenable number.

74036191720 is an abundant number, since it is smaller than the sum of its proper divisors (92545239740).

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

74036191720 is a wasteful number, since it uses less digits than its factorization.

74036191720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850904804 (or 1850904800 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 74036191720 in words is "seventy-four billion, thirty-six million, one hundred ninety-one thousand, seven hundred twenty".