20949229883 has 2 divisors, whose sum is σ = 20949229884. Its totient is φ = 20949229882.

The previous prime is 20949229799. The next prime is 20949229901. The reversal of 20949229883 is 38892294902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20949229883 - 2²⁰ = 20948181307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20949229783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10474614941 + 10474614942.

It is an arithmetic number, because the mean of its divisors is an integer number (10474614942).

Almost surely, 2^20949229883 is an apocalyptic number.

20949229883 is a deficient number, since it is larger than the sum of its proper divisors (1).

20949229883 is an equidigital number, since it uses as much as digits as its factorization.

20949229883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 20949229883 in words is "twenty billion, nine hundred forty-nine million, two hundred twenty-nine thousand, eight hundred eighty-three".