117373521640 has 32 divisors (see below), whose sum is σ = 264100941000. Its totient is φ = 46947538944.

The previous prime is 117373521619. The next prime is 117373521689. The reversal of 117373521640 is 46125373711.

It can be written as a sum of positive squares in 4 ways, for example, as 114908796324 + 2464725316 = 338982^2 + 49646^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 117373521593 and 117373521602.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1420996 + ... + 1501324.

Almost surely, 2^117373521640 is an apocalyptic number.

117373521640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117373521640 is an abundant number, since it is smaller than the sum of its proper divisors (146727419360).

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

117373521640 is a wasteful number, since it uses less digits than its factorization.

117373521640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116869 (or 116865 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 117373521640 in words is "one hundred seventeen billion, three hundred seventy-three million, five hundred twenty-one thousand, six hundred forty".