117538362866 has 4 divisors (see below), whose sum is σ = 176307544302. Its totient is φ = 58769181432.

The previous prime is 117538362811. The next prime is 117538362881. The reversal of 117538362866 is 668263835711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 668263835711 = 16433 ⋅40665967.

It can be written as a sum of positive squares in only one way, i.e., 65469968641 + 52068394225 = 255871^2 + 228185^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29384590715 + ... + 29384590718.

Almost surely, 2^117538362866 is an apocalyptic number.

117538362866 is a deficient number, since it is larger than the sum of its proper divisors (58769181436).

117538362866 is an equidigital number, since it uses as much as digits as its factorization.

117538362866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58769181435.

The product of its digits is 8709120, while the sum is 56.

The spelling of 117538362866 in words is "one hundred seventeen billion, five hundred thirty-eight million, three hundred sixty-two thousand, eight hundred sixty-six".