2051028864887 has 4 divisors (see below), whose sum is σ = 2061335542800. Its totient is φ = 2040722186976.

The previous prime is 2051028864827. The next prime is 2051028864901. The reversal of 2051028864887 is 7884688201502.

It is a happy number.

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 2051028864887 - 2³⁸ = 1776150957943 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 (2051028864827) 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, 5153338658 + ... + 5153339055.

It is an arithmetic number, because the mean of its divisors is an integer number (515333885700).

Almost surely, 2^{2051028864887} is an apocalyptic number.

2051028864887 is a deficient number, since it is larger than the sum of its proper divisors (10306677913).

2051028864887 is a wasteful number, since it uses less digits than its factorization.

2051028864887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306677912.

The product of its (nonzero) digits is 13762560, while the sum is 59.

The spelling of 2051028864887 in words is "two trillion, fifty-one billion, twenty-eight million, eight hundred sixty-four thousand, eight hundred eighty-seven".