28251622111652 has 12 divisors (see below), whose sum is σ = 49493103204300. Its totient is φ = 14110735481856.

The previous prime is 28251622111619. The next prime is 28251622111747. The reversal of 28251622111652 is 25611122615282.

It can be written as a sum of positive squares in 2 ways, for example, as 15349344894976 + 12902277216676 = 3917824^2 + 3591974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3768889277 + ... + 3768896772.

It is an arithmetic number, because the mean of its divisors is an integer number (4124425267025).

Almost surely, 2^{28251622111652} is an apocalyptic number.

It is an amenable number.

28251622111652 is a deficient number, since it is larger than the sum of its proper divisors (21241481092648).

28251622111652 is a wasteful number, since it uses less digits than its factorization.

28251622111652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7537786990 (or 7537786988 counting only the distinct ones).

The product of its digits is 230400, while the sum is 44.

The spelling of 28251622111652 in words is "twenty-eight trillion, two hundred fifty-one billion, six hundred twenty-two million, one hundred eleven thousand, six hundred fifty-two".