20412799699 has 2 divisors, whose sum is σ = 20412799700. Its totient is φ = 20412799698.

The previous prime is 20412799697. The next prime is 20412799711. The reversal of 20412799699 is 99699721402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20412799699 - 2¹ = 20412799697 is a prime.

Together with 20412799697, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20412799697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206399849 + 10206399850.

It is an arithmetic number, because the mean of its divisors is an integer number (10206399850).

Almost surely, 2^20412799699 is an apocalyptic number.

20412799699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412799699 is an equidigital number, since it uses as much as digits as its factorization.

20412799699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The spelling of 20412799699 in words is "twenty billion, four hundred twelve million, seven hundred ninety-nine thousand, six hundred ninety-nine".