117864240457 has 2 divisors, whose sum is σ = 117864240458. Its totient is φ = 117864240456.

The previous prime is 117864240433. The next prime is 117864240491. The reversal of 117864240457 is 754042468711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87788356681 + 30075883776 = 296291^2 + 173424^2 .

It is a cyclic number.

It is not a de Polignac number, because 117864240457 - 2¹⁵ = 117864207689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117864240457.

It is not a weakly prime, because it can be changed into another prime (117864240497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58932120228 + 58932120229.

It is an arithmetic number, because the mean of its divisors is an integer number (58932120229).

Almost surely, 2^117864240457 is an apocalyptic number.

It is an amenable number.

117864240457 is a deficient number, since it is larger than the sum of its proper divisors (1).

117864240457 is an equidigital number, since it uses as much as digits as its factorization.

117864240457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 117864240457 in words is "one hundred seventeen billion, eight hundred sixty-four million, two hundred forty thousand, four hundred fifty-seven".