20274012209 has 16 divisors (see below), whose sum is σ = 22267526400. Its totient is φ = 18305721360.

The previous prime is 20274012197. The next prime is 20274012229. The reversal of 20274012209 is 90221047202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20274012209 is a prime.

It is a super-2 number, since 2×20274012209² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20274012229) 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, 3760814 + ... + 3766200.

It is an arithmetic number, because the mean of its divisors is an integer number (1391720400).

Almost surely, 2^20274012209 is an apocalyptic number.

It is an amenable number.

20274012209 is a deficient number, since it is larger than the sum of its proper divisors (1993514191).

20274012209 is a wasteful number, since it uses less digits than its factorization.

20274012209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 20274012209 in words is "twenty billion, two hundred seventy-four million, twelve thousand, two hundred nine".