17745436979 has 2 divisors, whose sum is σ = 17745436980. Its totient is φ = 17745436978.

The previous prime is 17745436931. The next prime is 17745436987. The reversal of 17745436979 is 97963454771.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17745436979 - 2¹² = 17745432883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (17745436999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8872718489 + 8872718490.

It is an arithmetic number, because the mean of its divisors is an integer number (8872718490).

Almost surely, 2^17745436979 is an apocalyptic number.

17745436979 is a deficient number, since it is larger than the sum of its proper divisors (1).

17745436979 is an equidigital number, since it uses as much as digits as its factorization.

17745436979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40007520, while the sum is 62.

The spelling of 17745436979 in words is "seventeen billion, seven hundred forty-five million, four hundred thirty-six thousand, nine hundred seventy-nine".