117665472540 has 288 divisors, whose sum is σ = 413867930112. Its totient is φ = 24266304000.

The previous prime is 117665472527. The next prime is 117665472593. The reversal of 117665472540 is 45274566711.

It is a super-2 number, since 2×117665472540² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117665472540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 105340062 + ... + 105341178.

It is an arithmetic number, because the mean of its divisors is an integer number (1437041424).

Almost surely, 2^117665472540 is an apocalyptic number.

117665472540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117665472540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206933965056).

117665472540 is an abundant number, since it is smaller than the sum of its proper divisors (296202457572).

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

117665472540 is a wasteful number, since it uses less digits than its factorization.

117665472540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 117665472540 in words is "one hundred seventeen billion, six hundred sixty-five million, four hundred seventy-two thousand, five hundred forty".