28999963533 has 16 divisors (see below), whose sum is σ = 39348743616. Its totient is φ = 18994821120.

The previous prime is 28999963501. The next prime is 28999963583. The reversal of 28999963533 is 33536999982.

It is not a de Polignac number, because 28999963533 - 2⁵ = 28999963501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999963583) 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, 276660 + ... + 366797.

It is an arithmetic number, because the mean of its divisors is an integer number (2459296476).

Almost surely, 2^28999963533 is an apocalyptic number.

It is an amenable number.

28999963533 is a deficient number, since it is larger than the sum of its proper divisors (10348780083).

28999963533 is a wasteful number, since it uses less digits than its factorization.

28999963533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643724.

The product of its digits is 85030560, while the sum is 66.

The spelling of 28999963533 in words is "twenty-eight billion, nine hundred ninety-nine million, nine hundred sixty-three thousand, five hundred thirty-three".