20412799772 has 12 divisors (see below), whose sum is σ = 36874735296. Its totient is φ = 9877161120.

The previous prime is 20412799753. The next prime is 20412799787. The reversal of 20412799772 is 27799721402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20412799772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82309553 + ... + 82309800.

It is an arithmetic number, because the mean of its divisors is an integer number (3072894608).

Almost surely, 2^20412799772 is an apocalyptic number.

It is an amenable number.

20412799772 is a deficient number, since it is larger than the sum of its proper divisors (16461935524).

20412799772 is a wasteful number, since it uses less digits than its factorization.

20412799772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164619388 (or 164619386 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 20412799772 in words is "twenty billion, four hundred twelve million, seven hundred ninety-nine thousand, seven hundred seventy-two".