28075549653990 has 32 divisors (see below), whose sum is σ = 74868132411360. Its totient is φ = 7486813240992.

The previous prime is 28075549653971. The next prime is 28075549654067. The reversal of 28075549653990 is 9935694557082.

It is a happy number.

28075549653990 is a `hidden beast` number, since 2 + 8 + 0 + 7 + 554 + 9 + 65 + 3 + 9 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51991758349 + ... + 51991758888.

It is an arithmetic number, because the mean of its divisors is an integer number (2339629137855).

Almost surely, 2^{28075549653990} is an apocalyptic number.

28075549653990 is an abundant number, since it is smaller than the sum of its proper divisors (46792582757370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28075549653990 is a wasteful number, since it uses less digits than its factorization.

28075549653990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103983517253 (or 103983517247 counting only the distinct ones).

The product of its (nonzero) digits is 734832000, while the sum is 72.

The spelling of 28075549653990 in words is "twenty-eight trillion, seventy-five billion, five hundred forty-nine million, six hundred fifty-three thousand, nine hundred ninety".