28762645897 has 4 divisors (see below), whose sum is σ = 29690473216. Its totient is φ = 27834818580.

The previous prime is 28762645889. The next prime is 28762645921. The reversal of 28762645897 is 79854626782.

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 28762645897 - 2³ = 28762645889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28762645097) 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, 463913613 + ... + 463913674.

It is an arithmetic number, because the mean of its divisors is an integer number (7422618304).

Almost surely, 2^28762645897 is an apocalyptic number.

It is an amenable number.

28762645897 is a deficient number, since it is larger than the sum of its proper divisors (927827319).

28762645897 is an equidigital number, since it uses as much as digits as its factorization.

28762645897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927827318.

The product of its digits is 81285120, while the sum is 64.

The spelling of 28762645897 in words is "twenty-eight billion, seven hundred sixty-two million, six hundred forty-five thousand, eight hundred ninety-seven".