854581824551 has 12 divisors (see below), whose sum is σ = 1070575033752. Its totient is φ = 676152651888.

The previous prime is 854581824491. The next prime is 854581824559. The reversal of 854581824551 is 155428185458.

It is not a de Polignac number, because 854581824551 - 2⁶ = 854581824487 is a prime.

It is a super-2 number, since 2×854581824551² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854581824559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670785725 + ... + 670786998.

It is an arithmetic number, because the mean of its divisors is an integer number (89214586146).

Almost surely, 2^854581824551 is an apocalyptic number.

854581824551 is a deficient number, since it is larger than the sum of its proper divisors (215993209201).

854581824551 is a wasteful number, since it uses less digits than its factorization.

854581824551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341572750 (or 1341572743 counting only the distinct ones).

The product of its digits is 10240000, while the sum is 56.

The spelling of 854581824551 in words is "eight hundred fifty-four billion, five hundred eighty-one million, eight hundred twenty-four thousand, five hundred fifty-one".