109857762779 has 2 divisors, whose sum is σ = 109857762780. Its totient is φ = 109857762778.

The previous prime is 109857762739. The next prime is 109857762829. The reversal of 109857762779 is 977267758901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109857762779 - 2⁸ = 109857762523 is a prime.

It is not a weakly prime, because it can be changed into another prime (109857762739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54928881389 + 54928881390.

It is an arithmetic number, because the mean of its divisors is an integer number (54928881390).

Almost surely, 2^109857762779 is an apocalyptic number.

109857762779 is a deficient number, since it is larger than the sum of its proper divisors (1).

109857762779 is an equidigital number, since it uses as much as digits as its factorization.

109857762779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93350880, while the sum is 68.

The spelling of 109857762779 in words is "one hundred nine billion, eight hundred fifty-seven million, seven hundred sixty-two thousand, seven hundred seventy-nine".