116214847781 has 4 divisors (see below), whose sum is σ = 118407580812. Its totient is φ = 114022114752.

The previous prime is 116214847751. The next prime is 116214847783. The reversal of 116214847781 is 187748412611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 187748412611 = 259619 ⋅723169.

It can be written as a sum of positive squares in 2 ways, for example, as 99435531556 + 16779316225 = 315334^2 + 129535^2 .

It is a cyclic number.

It is not a de Polignac number, because 116214847781 - 2¹⁰ = 116214846757 is a prime.

It is a super-2 number, since 2×116214847781² (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 (116214847783) 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, 1096366436 + ... + 1096366541.

It is an arithmetic number, because the mean of its divisors is an integer number (29601895203).

Almost surely, 2^116214847781 is an apocalyptic number.

It is an amenable number.

116214847781 is a deficient number, since it is larger than the sum of its proper divisors (2192733031).

116214847781 is an equidigital number, since it uses as much as digits as its factorization.

116214847781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192733030.

The product of its digits is 602112, while the sum is 50.

The spelling of 116214847781 in words is "one hundred sixteen billion, two hundred fourteen million, eight hundred forty-seven thousand, seven hundred eighty-one".