116781011 has 4 divisors (see below), whose sum is σ = 122927400. Its totient is φ = 110634624.

The previous prime is 116780987. The next prime is 116781031. The reversal of 116781011 is 110187611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110187611 = 311 ⋅354301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116781011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116781031) 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, 3073166 + ... + 3073203.

It is an arithmetic number, because the mean of its divisors is an integer number (30731850).

Almost surely, 2^116781011 is an apocalyptic number.

116781011 is a deficient number, since it is larger than the sum of its proper divisors (6146389).

116781011 is an equidigital number, since it uses as much as digits as its factorization.

116781011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146388.

The product of its (nonzero) digits is 336, while the sum is 26.

The square root of 116781011 is about 10806.5263151486. The cubic root of 116781011 is about 488.7919861106.

The spelling of 116781011 in words is "one hundred sixteen million, seven hundred eighty-one thousand, eleven".