28000261613856 has 48 divisors (see below), whose sum is σ = 84000784843584. Its totient is φ = 8000074746624.

The previous prime is 28000261613833. The next prime is 28000261613869. The reversal of 28000261613856 is 65831616200082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20833527315 + ... + 20833528658.

It is an arithmetic number, because the mean of its divisors is an integer number (1750016350908).

Almost surely, 2^{28000261613856} is an apocalyptic number.

It is an amenable number.

28000261613856 is an abundant number, since it is smaller than the sum of its proper divisors (56000523229728).

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

28000261613856 is a wasteful number, since it uses less digits than its factorization.

28000261613856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41667055993 (or 41667055985 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 28000261613856 in words is "twenty-eight trillion, two hundred sixty-one million, six hundred thirteen thousand, eight hundred fifty-six".