74781092220809 has 32 divisors (see below), whose sum is σ = 80908146923520. Its totient is φ = 68708160747072.

The previous prime is 74781092220799. The next prime is 74781092220823. The reversal of 74781092220809 is 90802229018747.

It is a cyclic number.

It is not a de Polignac number, because 74781092220809 - 2²⁰ = 74781091172233 is a prime.

It is a super-2 number, since 2×74781092220809² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74781092220869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23464413914 + ... + 23464417100.

It is an arithmetic number, because the mean of its divisors is an integer number (2528379591360).

Almost surely, 2^{74781092220809} is an apocalyptic number.

It is an amenable number.

74781092220809 is a deficient number, since it is larger than the sum of its proper divisors (6127054702711).

74781092220809 is a wasteful number, since it uses less digits than its factorization.

74781092220809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8589.

The product of its (nonzero) digits is 8128512, while the sum is 59.

The spelling of 74781092220809 in words is "seventy-four trillion, seven hundred eighty-one billion, ninety-two million, two hundred twenty thousand, eight hundred nine".