117721584650 has 24 divisors (see below), whose sum is σ = 224880046860. Its totient is φ = 45815967360.

The previous prime is 117721584599. The next prime is 117721584677. The reversal of 117721584650 is 56485127711.

It can be written as a sum of positive squares in 6 ways, for example, as 46831989649 + 70889595001 = 216407^2 + 266251^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117721584595 and 117721584604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31814795 + ... + 31818494.

Almost surely, 2^117721584650 is an apocalyptic number.

117721584650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117721584650 is a deficient number, since it is larger than the sum of its proper divisors (107158462210).

117721584650 is a wasteful number, since it uses less digits than its factorization.

117721584650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63633338 (or 63633333 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 117721584650 in words is "one hundred seventeen billion, seven hundred twenty-one million, five hundred eighty-four thousand, six hundred fifty".