20033253979 has 2 divisors, whose sum is σ = 20033253980. Its totient is φ = 20033253978.

The previous prime is 20033253973. The next prime is 20033254057. The reversal of 20033253979 is 97935233002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20033253979 is a prime.

It is not a weakly prime, because it can be changed into another prime (20033253973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016626989 + 10016626990.

It is an arithmetic number, because the mean of its divisors is an integer number (10016626990).

Almost surely, 2^20033253979 is an apocalyptic number.

20033253979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20033253979 is an equidigital number, since it uses as much as digits as its factorization.

20033253979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 43.

The spelling of 20033253979 in words is "twenty billion, thirty-three million, two hundred fifty-three thousand, nine hundred seventy-nine".