28275545557292 has 12 divisors (see below), whose sum is σ = 53980586973096. Its totient is φ = 12852520707840.

The previous prime is 28275545557289. The next prime is 28275545557331. The reversal of 28275545557292 is 29275554557282.

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, 321313017653 + ... + 321313017740.

It is an arithmetic number, because the mean of its divisors is an integer number (4498382247758).

Almost surely, 2^{28275545557292} is an apocalyptic number.

28275545557292 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28275545557292 is a deficient number, since it is larger than the sum of its proper divisors (25705041415804).

28275545557292 is a wasteful number, since it uses less digits than its factorization.

28275545557292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642626035408 (or 642626035406 counting only the distinct ones).

The product of its digits is 705600000, while the sum is 68.

The spelling of 28275545557292 in words is "twenty-eight trillion, two hundred seventy-five billion, five hundred forty-five million, five hundred fifty-seven thousand, two hundred ninety-two".