28447551543 has 8 divisors (see below), whose sum is σ = 39153619456. Its totient is φ = 18353259000.

The previous prime is 28447551529. The next prime is 28447551557. The reversal of 28447551543 is 34515574482.

It is an interprime number because it is at equal distance from previous prime (28447551529) and next prime (28447551557).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28447551543 - 2⁴ = 28447551527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28447551492 and 28447551501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28447558543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152943733 + ... + 152943918.

It is an arithmetic number, because the mean of its divisors is an integer number (4894202432).

Almost surely, 2^28447551543 is an apocalyptic number.

28447551543 is a deficient number, since it is larger than the sum of its proper divisors (10706067913).

28447551543 is a wasteful number, since it uses less digits than its factorization.

28447551543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305887685.

The product of its digits is 2688000, while the sum is 48.

The spelling of 28447551543 in words is "twenty-eight billion, four hundred forty-seven million, five hundred fifty-one thousand, five hundred forty-three".