2051012399 has 8 divisors (see below), whose sum is σ = 2171443440. Its totient is φ = 1931829696.

The previous prime is 2051012389. The next prime is 2051012417. The reversal of 2051012399 is 9932101502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2051012399 - 2¹² = 2051008303 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 (2051012309) 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 7 ways as a sum of consecutive naturals, for example, 308702 + ... + 315275.

It is an arithmetic number, because the mean of its divisors is an integer number (271430430).

Almost surely, 2^2051012399 is an apocalyptic number.

2051012399 is a deficient number, since it is larger than the sum of its proper divisors (120431041).

2051012399 is a wasteful number, since it uses less digits than its factorization.

2051012399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624169.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 2051012399 is about 45288.1043873554. The cubic root of 2051012399 is about 1270.5431778637.

The spelling of 2051012399 in words is "two billion, fifty-one million, twelve thousand, three hundred ninety-nine".