117780891439 has 2 divisors, whose sum is σ = 117780891440. Its totient is φ = 117780891438.

The previous prime is 117780891413. The next prime is 117780891443. The reversal of 117780891439 is 934198087711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117780891439 - 2²³ = 117772502831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117780891499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58890445719 + 58890445720.

It is an arithmetic number, because the mean of its divisors is an integer number (58890445720).

Almost surely, 2^117780891439 is an apocalyptic number.

117780891439 is a deficient number, since it is larger than the sum of its proper divisors (1).

117780891439 is an equidigital number, since it uses as much as digits as its factorization.

117780891439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 58.

The spelling of 117780891439 in words is "one hundred seventeen billion, seven hundred eighty million, eight hundred ninety-one thousand, four hundred thirty-nine".