117280635851 has 2 divisors, whose sum is σ = 117280635852. Its totient is φ = 117280635850.

The previous prime is 117280635841. The next prime is 117280635859. The reversal of 117280635851 is 158536082711.

It is a strong prime.

It is an emirp because it is prime and its reverse (158536082711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117280635851 is a prime.

It is a super-2 number, since 2×117280635851² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117280635796 and 117280635805.

It is not a weakly prime, because it can be changed into another prime (117280635859) 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 as a sum of consecutive naturals, namely, 58640317925 + 58640317926.

It is an arithmetic number, because the mean of its divisors is an integer number (58640317926).

Almost surely, 2^117280635851 is an apocalyptic number.

117280635851 is a deficient number, since it is larger than the sum of its proper divisors (1).

117280635851 is an equidigital number, since it uses as much as digits as its factorization.

117280635851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 117280635851 in words is "one hundred seventeen billion, two hundred eighty million, six hundred thirty-five thousand, eight hundred fifty-one".