118412843261 has 2 divisors, whose sum is σ = 118412843262. Its totient is φ = 118412843260.

The previous prime is 118412843249. The next prime is 118412843387. The reversal of 118412843261 is 162348214811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109028077636 + 9384765625 = 330194^2 + 96875^2 .

It is an emirp because it is prime and its reverse (162348214811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118412843261 - 2³⁴ = 101232974077 is a prime.

It is a super-2 number, since 2×118412843261² (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 (118412840261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59206421630 + 59206421631.

It is an arithmetic number, because the mean of its divisors is an integer number (59206421631).

Almost surely, 2^118412843261 is an apocalyptic number.

It is an amenable number.

118412843261 is a deficient number, since it is larger than the sum of its proper divisors (1).

118412843261 is an equidigital number, since it uses as much as digits as its factorization.

118412843261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 41.

The spelling of 118412843261 in words is "one hundred eighteen billion, four hundred twelve million, eight hundred forty-three thousand, two hundred sixty-one".