117212809949 has 2 divisors, whose sum is σ = 117212809950. Its totient is φ = 117212809948.

The previous prime is 117212809939. The next prime is 117212810017. The reversal of 117212809949 is 949908212711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113114505625 + 4098304324 = 336325^2 + 64018^2 .

It is a cyclic number.

It is not a de Polignac number, because 117212809949 - 2⁴ = 117212809933 is a prime.

It is a super-2 number, since 2×117212809949² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117212809949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117212809919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58606404974 + 58606404975.

It is an arithmetic number, because the mean of its divisors is an integer number (58606404975).

Almost surely, 2^117212809949 is an apocalyptic number.

It is an amenable number.

117212809949 is a deficient number, since it is larger than the sum of its proper divisors (1).

117212809949 is an equidigital number, since it uses as much as digits as its factorization.

117212809949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 53.

The spelling of 117212809949 in words is "one hundred seventeen billion, two hundred twelve million, eight hundred nine thousand, nine hundred forty-nine".