28110564077 has 4 divisors (see below), whose sum is σ = 28278890976. Its totient is φ = 27942237180.

The previous prime is 28110564023. The next prime is 28110564173. The reversal of 28110564077 is 77046501182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28110564077 - 2²⁸ = 27842128621 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 (28110564007) 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, 84163199 + ... + 84163532.

It is an arithmetic number, because the mean of its divisors is an integer number (7069722744).

Almost surely, 2^28110564077 is an apocalyptic number.

It is an amenable number.

28110564077 is a deficient number, since it is larger than the sum of its proper divisors (168326899).

28110564077 is a wasteful number, since it uses less digits than its factorization.

28110564077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168326898.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 28110564077 in words is "twenty-eight billion, one hundred ten million, five hundred sixty-four thousand, seventy-seven".