117851897632 has 36 divisors (see below), whose sum is σ = 269901894150. Its totient is φ = 50507955456.

The previous prime is 117851897563. The next prime is 117851897633. The reversal of 117851897632 is 236798158711.

It can be written as a sum of positive squares in only one way, i.e., 78918293776 + 38933603856 = 280924^2 + 197316^2 .

It is not an unprimeable number, because it can be changed into a prime (117851897633) 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 5 ways as a sum of consecutive naturals, for example, 37578757 + ... + 37581892.

Almost surely, 2^117851897632 is an apocalyptic number.

It is an amenable number.

117851897632 is an abundant number, since it is smaller than the sum of its proper divisors (152049996518).

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

117851897632 is an equidigital number, since it uses as much as digits as its factorization.

117851897632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75160673 (or 75160658 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 58.

The spelling of 117851897632 in words is "one hundred seventeen billion, eight hundred fifty-one million, eight hundred ninety-seven thousand, six hundred thirty-two".