20214240979 has 2 divisors, whose sum is σ = 20214240980. Its totient is φ = 20214240978.

The previous prime is 20214240911. The next prime is 20214241009. The reversal of 20214240979 is 97904241202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20214240979 is a prime.

It is not a weakly prime, because it can be changed into another prime (20214241979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107120489 + 10107120490.

It is an arithmetic number, because the mean of its divisors is an integer number (10107120490).

Almost surely, 2^20214240979 is an apocalyptic number.

20214240979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20214240979 is an equidigital number, since it uses as much as digits as its factorization.

20214240979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 20214240979 in words is "twenty billion, two hundred fourteen million, two hundred forty thousand, nine hundred seventy-nine".