74564092049 has 4 divisors (see below), whose sum is σ = 74574066660. Its totient is φ = 74554117440.

The previous prime is 74564092039. The next prime is 74564092073. The reversal of 74564092049 is 94029046547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50061825025 + 24502267024 = 223745^2 + 156532^2 .

It is a cyclic number.

It is not a de Polignac number, because 74564092049 - 2⁸ = 74564091793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74564091988 and 74564092006.

It is not an unprimeable number, because it can be changed into a prime (74564092019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4976084 + ... + 4991045.

It is an arithmetic number, because the mean of its divisors is an integer number (18643516665).

Almost surely, 2^74564092049 is an apocalyptic number.

It is an amenable number.

74564092049 is a deficient number, since it is larger than the sum of its proper divisors (9974611).

74564092049 is an equidigital number, since it uses as much as digits as its factorization.

74564092049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9974610.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 74564092049 in words is "seventy-four billion, five hundred sixty-four million, ninety-two thousand, forty-nine".