2051365115123 has 4 divisors (see below), whose sum is σ = 2052954090168. Its totient is φ = 2049776140080.

The previous prime is 2051365115117. The next prime is 2051365115147. The reversal of 2051365115123 is 3215115631502.

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 2051365115123 - 2¹² = 2051365111027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051365115153) 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, 794485586 + ... + 794488167.

It is an arithmetic number, because the mean of its divisors is an integer number (513238522542).

Almost surely, 2^{2051365115123} is an apocalyptic number.

2051365115123 is a deficient number, since it is larger than the sum of its proper divisors (1588975045).

2051365115123 is a wasteful number, since it uses less digits than its factorization.

2051365115123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588975044.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 2051365115123 in words is "two trillion, fifty-one billion, three hundred sixty-five million, one hundred fifteen thousand, one hundred twenty-three".