117280918656 has 640 divisors, whose sum is σ = 406438845120. Its totient is φ = 33177600000.

The previous prime is 117280918637. The next prime is 117280918663. The reversal of 117280918656 is 656819082711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 467254531 + ... + 467254781.

Almost surely, 2^117280918656 is an apocalyptic number.

117280918656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117280918656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203219422560).

117280918656 is an abundant number, since it is smaller than the sum of its proper divisors (289157926464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117280918656 is a wasteful number, since it uses less digits than its factorization.

117280918656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 117280918656 in words is "one hundred seventeen billion, two hundred eighty million, nine hundred eighteen thousand, six hundred fifty-six".