20146679699 has 2 divisors, whose sum is σ = 20146679700. Its totient is φ = 20146679698.

The previous prime is 20146679681. The next prime is 20146679741. The reversal of 20146679699 is 99697664102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20146679699 - 2²⁰ = 20145631123 is a prime.

It is not a weakly prime, because it can be changed into another prime (20146679629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073339849 + 10073339850.

It is an arithmetic number, because the mean of its divisors is an integer number (10073339850).

Almost surely, 2^20146679699 is an apocalyptic number.

20146679699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20146679699 is an equidigital number, since it uses as much as digits as its factorization.

20146679699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 20146679699 in words is "twenty billion, one hundred forty-six million, six hundred seventy-nine thousand, six hundred ninety-nine".