20374576309 has 16 divisors (see below), whose sum is σ = 20766985344. Its totient is φ = 19986220800.

The previous prime is 20374576301. The next prime is 20374576331. The reversal of 20374576309 is 90367547302.

It is a cyclic number.

It is not a de Polignac number, because 20374576309 - 2³ = 20374576301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20374576301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7298704 + ... + 7301494.

It is an arithmetic number, because the mean of its divisors is an integer number (1297936584).

Almost surely, 2^20374576309 is an apocalyptic number.

It is an amenable number.

20374576309 is a deficient number, since it is larger than the sum of its proper divisors (392409035).

20374576309 is a wasteful number, since it uses less digits than its factorization.

20374576309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468.

The product of its (nonzero) digits is 952560, while the sum is 46.

The spelling of 20374576309 in words is "twenty billion, three hundred seventy-four million, five hundred seventy-six thousand, three hundred nine".