854256723661 has 8 divisors (see below), whose sum is σ = 931925620800. Its totient is φ = 776589359040.

The previous prime is 854256723631. The next prime is 854256723737. The reversal of 854256723661 is 166327652458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 854256723661 - 2¹⁷ = 854256592589 is a prime.

It is a super-2 number, since 2×854256723661² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854256723631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999280 + ... + 1645318.

It is an arithmetic number, because the mean of its divisors is an integer number (116490702600).

Almost surely, 2^854256723661 is an apocalyptic number.

It is an amenable number.

854256723661 is a deficient number, since it is larger than the sum of its proper divisors (77668897139).

854256723661 is a wasteful number, since it uses less digits than its factorization.

854256723661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766259.

The product of its digits is 14515200, while the sum is 55.

It can be divided in two parts, 85425 and 6723661, that added together give a palindrome (6809086).

The spelling of 854256723661 in words is "eight hundred fifty-four billion, two hundred fifty-six million, seven hundred twenty-three thousand, six hundred sixty-one".