35981811779 has 2 divisors, whose sum is σ = 35981811780. Its totient is φ = 35981811778.

The previous prime is 35981811727. The next prime is 35981811791. The reversal of 35981811779 is 97711818953.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35981811779 is a prime.

It is not a weakly prime, because it can be changed into another prime (35981811379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17990905889 + 17990905890.

It is an arithmetic number, because the mean of its divisors is an integer number (17990905890).

Almost surely, 2^35981811779 is an apocalyptic number.

35981811779 is a deficient number, since it is larger than the sum of its proper divisors (1).

35981811779 is an equidigital number, since it uses as much as digits as its factorization.

35981811779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 59.

The spelling of 35981811779 in words is "thirty-five billion, nine hundred eighty-one million, eight hundred eleven thousand, seven hundred seventy-nine".