117931778048 has 112 divisors (see below), whose sum is σ = 270500368320. Its totient is φ = 50362515456.

The previous prime is 117931778009. The next prime is 117931778087. The reversal of 117931778048 is 840877139711.

It is an interprime number because it is at equal distance from previous prime (117931778009) and next prime (117931778087).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 117931777984 and 117931778002.

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, 16798283 + ... + 16805301.

It is an arithmetic number, because the mean of its divisors is an integer number (2415181860).

Almost surely, 2^117931778048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117931778048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135250184160).

117931778048 is an abundant number, since it is smaller than the sum of its proper divisors (152568590272).

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

117931778048 is an frugal number, since it uses more digits than its factorization.

117931778048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7345 (or 7321 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 56.

The spelling of 117931778048 in words is "one hundred seventeen billion, nine hundred thirty-one million, seven hundred seventy-eight thousand, forty-eight".