28110772351 has 4 divisors (see below), whose sum is σ = 28112126400. Its totient is φ = 28109418304.

The previous prime is 28110772337. The next prime is 28110772357. The reversal of 28110772351 is 15327701182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15327701182 = 2 ⋅7663850591.

It is a cyclic number.

It is not a de Polignac number, because 28110772351 - 2⁷ = 28110772223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28110772351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28110772357) 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, 645391 + ... + 687568.

It is an arithmetic number, because the mean of its divisors is an integer number (7028031600).

Almost surely, 2^28110772351 is an apocalyptic number.

28110772351 is a deficient number, since it is larger than the sum of its proper divisors (1354049).

28110772351 is a wasteful number, since it uses less digits than its factorization.

28110772351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354048.

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 28110772351 in words is "twenty-eight billion, one hundred ten million, seven hundred seventy-two thousand, three hundred fifty-one".