117387036181 has 2 divisors, whose sum is σ = 117387036182. Its totient is φ = 117387036180.

The previous prime is 117387036119. The next prime is 117387036191. The reversal of 117387036181 is 181630783711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114156136900 + 3230899281 = 337870^2 + 56841^2 .

It is a cyclic number.

It is not a de Polignac number, because 117387036181 - 2¹¹ = 117387034133 is a prime.

It is a super-2 number, since 2×117387036181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117387036191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58693518090 + 58693518091.

It is an arithmetic number, because the mean of its divisors is an integer number (58693518091).

Almost surely, 2^117387036181 is an apocalyptic number.

It is an amenable number.

117387036181 is a deficient number, since it is larger than the sum of its proper divisors (1).

117387036181 is an equidigital number, since it uses as much as digits as its factorization.

117387036181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 117387036181 in words is "one hundred seventeen billion, three hundred eighty-seven million, thirty-six thousand, one hundred eighty-one".