28645332433033 has 4 divisors (see below), whose sum is σ = 28645357563460. Its totient is φ = 28645307302608.

The previous prime is 28645332433027. The next prime is 28645332433099. The reversal of 28645332433033 is 33033423354682.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 842406401929 + 27802926031104 = 917827^2 + 5272848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28645332433033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28645332433633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10769910 + ... + 13163647.

It is an arithmetic number, because the mean of its divisors is an integer number (7161339390865).

Almost surely, 2^{28645332433033} is an apocalyptic number.

It is an amenable number.

28645332433033 is a deficient number, since it is larger than the sum of its proper divisors (25130427).

28645332433033 is a wasteful number, since it uses less digits than its factorization.

28645332433033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25130426.

The product of its (nonzero) digits is 11197440, while the sum is 49.

The spelling of 28645332433033 in words is "twenty-eight trillion, six hundred forty-five billion, three hundred thirty-two million, four hundred thirty-three thousand, thirty-three".