20412799689 has 32 divisors (see below), whose sum is σ = 28217769984. Its totient is φ = 13117507200.

The previous prime is 20412799609. The next prime is 20412799697. The reversal of 20412799689 is 98699721402.

It is not a de Polignac number, because 20412799689 - 2¹² = 20412795593 is a prime.

It is a super-2 number, since 2×20412799689² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20412799609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11846382 + ... + 11848104.

It is an arithmetic number, because the mean of its divisors is an integer number (881805312).

Almost surely, 2^20412799689 is an apocalyptic number.

It is an amenable number.

20412799689 is a deficient number, since it is larger than the sum of its proper divisors (7804970295).

20412799689 is a wasteful number, since it uses less digits than its factorization.

20412799689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 20412799689 in words is "twenty billion, four hundred twelve million, seven hundred ninety-nine thousand, six hundred eighty-nine".