117888655321 has 4 divisors (see below), whose sum is σ = 118679854500. Its totient is φ = 117097456144.

The previous prime is 117888655271. The next prime is 117888655331. The reversal of 117888655321 is 123556888711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123556888711 = 19087 ⋅6473353.

It can be written as a sum of positive squares in 2 ways, for example, as 38173344400 + 79715310921 = 195380^2 + 282339^2 .

It is a cyclic number.

It is not a de Polignac number, because 117888655321 - 2²⁹ = 117351784409 is a prime.

It is a super-2 number, since 2×117888655321² (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 (117888655331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395599366 + ... + 395599663.

It is an arithmetic number, because the mean of its divisors is an integer number (29669963625).

Almost surely, 2^117888655321 is an apocalyptic number.

It is an amenable number.

117888655321 is a deficient number, since it is larger than the sum of its proper divisors (791199179).

117888655321 is an equidigital number, since it uses as much as digits as its factorization.

117888655321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791199178.

The product of its digits is 3225600, while the sum is 55.

The spelling of 117888655321 in words is "one hundred seventeen billion, eight hundred eighty-eight million, six hundred fifty-five thousand, three hundred twenty-one".