2051064823 has 4 divisors (see below), whose sum is σ = 2059236648. Its totient is φ = 2042893000.

The previous prime is 2051064797. The next prime is 2051064833. The reversal of 2051064823 is 3284601502.

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 2051064823 - 2⁹ = 2051064311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051064833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4085536 + ... + 4086037.

It is an arithmetic number, because the mean of its divisors is an integer number (514809162).

Almost surely, 2^2051064823 is an apocalyptic number.

2051064823 is a deficient number, since it is larger than the sum of its proper divisors (8171825).

2051064823 is an equidigital number, since it uses as much as digits as its factorization.

2051064823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8171824.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2051064823 is about 45288.6831669900. The cubic root of 2051064823 is about 1270.5540028247.

The spelling of 2051064823 in words is "two billion, fifty-one million, sixty-four thousand, eight hundred twenty-three".