116542312781 has 4 divisors (see below), whose sum is σ = 116554363200. Its totient is φ = 116530262364.

The previous prime is 116542312759. The next prime is 116542312849. The reversal of 116542312781 is 187213245611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116542312781 - 2¹⁰ = 116542311757 is a prime.

It is a super-2 number, since 2×116542312781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116542312741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6010691 + ... + 6030048.

It is an arithmetic number, because the mean of its divisors is an integer number (29138590800).

Almost surely, 2^116542312781 is an apocalyptic number.

It is an amenable number.

116542312781 is a deficient number, since it is larger than the sum of its proper divisors (12050419).

116542312781 is an equidigital number, since it uses as much as digits as its factorization.

116542312781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12050418.

The product of its digits is 80640, while the sum is 41.

The spelling of 116542312781 in words is "one hundred sixteen billion, five hundred forty-two million, three hundred twelve thousand, seven hundred eighty-one".