117402854881 has 9 divisors (see below), whose sum is σ = 127133358681. Its totient is φ = 108367754352.

The previous prime is 117402854857. The next prime is 117402854897. The reversal of 117402854881 is 188458204711.

The square root of 117402854881 is 342641.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 28025773281 + 89377081600 = 167409^2 + 298960^2 .

It is not a de Polignac number, because 117402854881 - 2¹⁹ = 117402330593 is a prime.

It is a super-2 number, since 2×117402854881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117402854081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4441155 + ... + 4467511.

Almost surely, 2^117402854881 is an apocalyptic number.

117402854881 is the 342641-st square number.

117402854881 is the 171321-st centered octagonal number.

It is an amenable number.

117402854881 is a deficient number, since it is larger than the sum of its proper divisors (9730503800).

117402854881 is an frugal number, since it uses more digits than its factorization.

117402854881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52740 (or 26370 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 49.

Multiplying 117402854881 by its sum of digits (49), we get a square (5752739889169 = 2398487²).

The spelling of 117402854881 in words is "one hundred seventeen billion, four hundred two million, eight hundred fifty-four thousand, eight hundred eighty-one".