891063074055 has 192 divisors, whose sum is σ = 1891222483968. Its totient is φ = 353588336640.

The previous prime is 891063074039. The next prime is 891063074063. The reversal of 891063074055 is 550470360198.

It is not a de Polignac number, because 891063074055 - 2⁴ = 891063074039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 891063073995 and 891063074013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 113986507 + ... + 113994323.

It is an arithmetic number, because the mean of its divisors is an integer number (9850117104).

Almost surely, 2^891063074055 is an apocalyptic number.

891063074055 is an abundant number, since it is smaller than the sum of its proper divisors (1000159409913).

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

891063074055 is a wasteful number, since it uses less digits than its factorization.

891063074055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8486 (or 8479 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 891063074055 in words is "eight hundred ninety-one billion, sixty-three million, seventy-four thousand, fifty-five".