117929741281 has 9 divisors (see below), whose sum is σ = 129629405073. Its totient is φ = 107205421620.

The previous prime is 117929741263. The next prime is 117929741299. The reversal of 117929741281 is 182147929711.

The square root of 117929741281 is 343409.

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

It is an interprime number because it is at equal distance from previous prime (117929741263) and next prime (117929741299).

It is not a de Polignac number, because 117929741281 - 2⁵ = 117929741249 is a prime.

It is a super-2 number, since 2×117929741281² (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 (117929741261) 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, 3761890 + ... + 3793108.

Almost surely, 2^117929741281 is an apocalyptic number.

117929741281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117929741281 is the 343409-th square number.

117929741281 is the 171705-th centered octagonal number.

It is an amenable number.

117929741281 is a deficient number, since it is larger than the sum of its proper divisors (11699663792).

117929741281 is an frugal number, since it uses more digits than its factorization.

117929741281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62460 (or 31230 counting only the distinct ones).

The product of its digits is 508032, while the sum is 52.

The spelling of 117929741281 in words is "one hundred seventeen billion, nine hundred twenty-nine million, seven hundred forty-one thousand, two hundred eighty-one".