201040123979 has 2 divisors, whose sum is σ = 201040123980. Its totient is φ = 201040123978.

The previous prime is 201040123969. The next prime is 201040123981. The reversal of 201040123979 is 979321040102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201040123979 - 2³² = 196745156683 is a prime.

Together with 201040123981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201040123969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100520061989 + 100520061990.

It is an arithmetic number, because the mean of its divisors is an integer number (100520061990).

Almost surely, 2^201040123979 is an apocalyptic number.

201040123979 is a deficient number, since it is larger than the sum of its proper divisors (1).

201040123979 is an equidigital number, since it uses as much as digits as its factorization.

201040123979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 201040123979 in words is "two hundred one billion, forty million, one hundred twenty-three thousand, nine hundred seventy-nine".