28545603537 has 8 divisors (see below), whose sum is σ = 41520877920. Its totient is φ = 17300365760.

The previous prime is 28545603511. The next prime is 28545603557. The reversal of 28545603537 is 73530654582.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28545603537 - 2⁶ = 28545603473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28545603557) 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, 432509112 + ... + 432509177.

It is an arithmetic number, because the mean of its divisors is an integer number (5190109740).

Almost surely, 2^28545603537 is an apocalyptic number.

It is an amenable number.

28545603537 is a deficient number, since it is larger than the sum of its proper divisors (12975274383).

28545603537 is a wasteful number, since it uses less digits than its factorization.

28545603537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865018303.

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 28545603537 in words is "twenty-eight billion, five hundred forty-five million, six hundred three thousand, five hundred thirty-seven".