2051012279 has 4 divisors (see below), whose sum is σ = 2054617440. Its totient is φ = 2047407120.

The previous prime is 2051012261. The next prime is 2051012309. The reversal of 2051012279 is 9722101502.

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 2051012279 - 2⁸ = 2051012023 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 (2051012239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801727 + ... + 1802864.

It is an arithmetic number, because the mean of its divisors is an integer number (513654360).

Almost surely, 2^2051012279 is an apocalyptic number.

2051012279 is a deficient number, since it is larger than the sum of its proper divisors (3605161).

2051012279 is an equidigital number, since it uses as much as digits as its factorization.

2051012279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605160.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 2051012279 is about 45288.1030625042. The cubic root of 2051012279 is about 1270.5431530848.

The spelling of 2051012279 in words is "two billion, fifty-one million, twelve thousand, two hundred seventy-nine".