1028047777115 has 4 divisors (see below), whose sum is σ = 1233657332544. Its totient is φ = 822438221688.

The previous prime is 1028047777103. The next prime is 1028047777123. The reversal of 1028047777115 is 5117777408201.

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 1028047777115 - 2¹² = 1028047773019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102804777707 + ... + 102804777716.

It is an arithmetic number, because the mean of its divisors is an integer number (308414333136).

Almost surely, 2^{1028047777115} is an apocalyptic number.

1028047777115 is a deficient number, since it is larger than the sum of its proper divisors (205609555429).

1028047777115 is an equidigital number, since it uses as much as digits as its factorization.

1028047777115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205609555428.

The product of its (nonzero) digits is 768320, while the sum is 50.

The spelling of 1028047777115 in words is "one trillion, twenty-eight billion, forty-seven million, seven hundred seventy-seven thousand, one hundred fifteen".