109556316979 has 2 divisors, whose sum is σ = 109556316980. Its totient is φ = 109556316978.

The previous prime is 109556316959. The next prime is 109556316983. The reversal of 109556316979 is 979613655901.

It is a strong prime.

It is an emirp because it is prime and its reverse (979613655901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109556316979 - 2⁷ = 109556316851 is a prime.

It is not a weakly prime, because it can be changed into another prime (109556316959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54778158489 + 54778158490.

It is an arithmetic number, because the mean of its divisors is an integer number (54778158490).

Almost surely, 2^109556316979 is an apocalyptic number.

109556316979 is a deficient number, since it is larger than the sum of its proper divisors (1).

109556316979 is an equidigital number, since it uses as much as digits as its factorization.

109556316979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13778100, while the sum is 61.

The spelling of 109556316979 in words is "one hundred nine billion, five hundred fifty-six million, three hundred sixteen thousand, nine hundred seventy-nine".