117777789660 has 24 divisors (see below), whose sum is σ = 329777811216.
Its totient is φ = 31407410560.
The previous prime is 117777789659. The next prime is 117777789683. The reversal of 117777789660 is 66987777711.
It is a happy number.
It is a junction number, because it is equal to n+sod(n) for n = 117777789591 and 117777789600.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981481521 + ... + 981481640.
It is an arithmetic number, because the mean of its divisors is an integer number (13740742134).
Almost surely, 2117777789660 is an apocalyptic number.
117777789660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
117777789660 is an abundant number, since it is smaller than the sum of its proper divisors (212000021556).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
117777789660 is a wasteful number, since it uses less digits than its factorization.
117777789660 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1962963173 (or 1962963171 counting only the distinct ones).
The product of its (nonzero) digits is 43563744, while the sum is 66.
The spelling of 117777789660 in words is "one hundred seventeen billion, seven hundred seventy-seven million, seven hundred eighty-nine thousand, six hundred sixty".