28532743551 has 24 divisors (see below), whose sum is σ = 44946108480. Its totient is φ = 17336344896.

The previous prime is 28532743549. The next prime is 28532743553. The reversal of 28532743551 is 15534723582.

28532743551 is a `hidden beast` number, since 2 + 8 + 53 + 2 + 7 + 43 + 551 = 666.

It is an interprime number because it is at equal distance from previous prime (28532743549) and next prime (28532743553).

It is not a de Polignac number, because 28532743551 - 2¹ = 28532743549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28532743497 and 28532743506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28532743553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1534236 + ... + 1552721.

It is an arithmetic number, because the mean of its divisors is an integer number (1872754520).

Almost surely, 2^28532743551 is an apocalyptic number.

28532743551 is a deficient number, since it is larger than the sum of its proper divisors (16413364929).

28532743551 is a wasteful number, since it uses less digits than its factorization.

28532743551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087055 (or 3087052 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 28532743551 in words is "twenty-eight billion, five hundred thirty-two million, seven hundred forty-three thousand, five hundred fifty-one".