28433643537 has 16 divisors (see below), whose sum is σ = 40836067328. Its totient is φ = 17494081920.

The previous prime is 28433643529. The next prime is 28433643547. The reversal of 28433643537 is 73534633482.

It is not a de Polignac number, because 28433643537 - 2³ = 28433643529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28433643547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128112 + ... + 270702.

It is an arithmetic number, because the mean of its divisors is an integer number (2552254208).

Almost surely, 2^28433643537 is an apocalyptic number.

It is an amenable number.

28433643537 is a deficient number, since it is larger than the sum of its proper divisors (12402423791).

28433643537 is a wasteful number, since it uses less digits than its factorization.

28433643537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147720.

The product of its digits is 4354560, while the sum is 48.

The spelling of 28433643537 in words is "twenty-eight billion, four hundred thirty-three million, six hundred forty-three thousand, five hundred thirty-seven".