28114718651 has 4 divisors (see below), whose sum is σ = 28393082304. Its totient is φ = 27836355000.

The previous prime is 28114718629. The next prime is 28114718693. The reversal of 28114718651 is 15681741182.

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 28114718651 - 2¹⁴ = 28114702267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28114718851) 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, 139181675 + ... + 139181876.

It is an arithmetic number, because the mean of its divisors is an integer number (7098270576).

Almost surely, 2^28114718651 is an apocalyptic number.

28114718651 is a deficient number, since it is larger than the sum of its proper divisors (278363653).

28114718651 is a wasteful number, since it uses less digits than its factorization.

28114718651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278363652.

The product of its digits is 107520, while the sum is 44.

The spelling of 28114718651 in words is "twenty-eight billion, one hundred fourteen million, seven hundred eighteen thousand, six hundred fifty-one".