116540052721 has 4 divisors (see below), whose sum is σ = 116618638192. Its totient is φ = 116461467252.

The previous prime is 116540052649. The next prime is 116540052763. The reversal of 116540052721 is 127250045611.

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 116540052721 - 2¹⁷ = 116539921649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116540002721) 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, 39290511 + ... + 39293476.

It is an arithmetic number, because the mean of its divisors is an integer number (29154659548).

Almost surely, 2^116540052721 is an apocalyptic number.

It is an amenable number.

116540052721 is a deficient number, since it is larger than the sum of its proper divisors (78585471).

116540052721 is an equidigital number, since it uses as much as digits as its factorization.

116540052721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78585470.

The product of its (nonzero) digits is 16800, while the sum is 34.

It can be divided in two parts, 1165400 and 52721, that added together give a palindrome (1218121).

The spelling of 116540052721 in words is "one hundred sixteen billion, five hundred forty million, fifty-two thousand, seven hundred twenty-one".