117779011789 has 4 divisors (see below), whose sum is σ = 117793540800. Its totient is φ = 117764482780.

The previous prime is 117779011769. The next prime is 117779011799. The reversal of 117779011789 is 987110977711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 987110977711 = 1249 ⋅790321039.

It is a cyclic number.

It is not a de Polignac number, because 117779011789 - 2¹⁹ = 117778487501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117779011709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7252339 + ... + 7268560.

It is an arithmetic number, because the mean of its divisors is an integer number (29448385200).

Almost surely, 2^117779011789 is an apocalyptic number.

It is an amenable number.

117779011789 is a deficient number, since it is larger than the sum of its proper divisors (14529011).

117779011789 is an equidigital number, since it uses as much as digits as its factorization.

117779011789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14529010.

The product of its (nonzero) digits is 1555848, while the sum is 58.

The spelling of 117779011789 in words is "one hundred seventeen billion, seven hundred seventy-nine million, eleven thousand, seven hundred eighty-nine".