117581377650 has 48 divisors (see below), whose sum is σ = 318111077088. Its totient is φ = 28504576000.

The previous prime is 117581377603. The next prime is 117581377657. The reversal of 117581377650 is 56773185711.

It is a junction number, because it is equal to n+sod(n) for n = 117581377593 and 117581377602.

It is not an unprimeable number, because it can be changed into a prime (117581377657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35629071 + ... + 35632370.

It is an arithmetic number, because the mean of its divisors is an integer number (6627314106).

Almost surely, 2^117581377650 is an apocalyptic number.

117581377650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117581377650 is an abundant number, since it is smaller than the sum of its proper divisors (200529699438).

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

117581377650 is a wasteful number, since it uses less digits than its factorization.

117581377650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71261467 (or 71261462 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 51.

The spelling of 117581377650 in words is "one hundred seventeen billion, five hundred eighty-one million, three hundred seventy-seven thousand, six hundred fifty".