20140716979 has 2 divisors, whose sum is σ = 20140716980. Its totient is φ = 20140716978.

The previous prime is 20140716943. The next prime is 20140716983. The reversal of 20140716979 is 97961704102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20140716979 - 2³¹ = 17993233331 is a prime.

It is not a weakly prime, because it can be changed into another prime (20140716919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070358489 + 10070358490.

It is an arithmetic number, because the mean of its divisors is an integer number (10070358490).

Almost surely, 2^20140716979 is an apocalyptic number.

20140716979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20140716979 is an equidigital number, since it uses as much as digits as its factorization.

20140716979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 20140716979 in words is "twenty billion, one hundred forty million, seven hundred sixteen thousand, nine hundred seventy-nine".