2116444006451 has 4 divisors (see below), whose sum is σ = 2165663634552. Its totient is φ = 2067224378352.

The previous prime is 2116444006381. The next prime is 2116444006493. The reversal of 2116444006451 is 1546004446112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2116444006451 - 2¹⁰ = 2116444005427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116444006151) 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, 24609813986 + ... + 24609814071.

It is an arithmetic number, because the mean of its divisors is an integer number (541415908638).

Almost surely, 2^{2116444006451} is an apocalyptic number.

2116444006451 is a deficient number, since it is larger than the sum of its proper divisors (49219628101).

2116444006451 is an equidigital number, since it uses as much as digits as its factorization.

2116444006451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49219628100.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 2116444006451 in words is "two trillion, one hundred sixteen billion, four hundred forty-four million, six thousand, four hundred fifty-one".