20763952999 has 2 divisors, whose sum is σ = 20763953000. Its totient is φ = 20763952998.

The previous prime is 20763952997. The next prime is 20763953029. The reversal of 20763952999 is 99925936702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20763952999 - 2¹ = 20763952997 is a prime.

It is a super-2 number, since 2×20763952999² (a number of 21 digits) contains 22 as substring.

Together with 20763952997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20763952997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381976499 + 10381976500.

It is an arithmetic number, because the mean of its divisors is an integer number (10381976500).

Almost surely, 2^20763952999 is an apocalyptic number.

20763952999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20763952999 is an equidigital number, since it uses as much as digits as its factorization.

20763952999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16533720, while the sum is 61.

The spelling of 20763952999 in words is "twenty billion, seven hundred sixty-three million, nine hundred fifty-two thousand, nine hundred ninety-nine".