55785833723 has 4 divisors (see below), whose sum is σ = 55786819320. Its totient is φ = 55784848128.

The previous prime is 55785833717. The next prime is 55785833749. The reversal of 55785833723 is 32733858755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55785833723 - 2¹⁸ = 55785571579 is a prime.

It is a super-2 number, since 2×55785833723² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55785833783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402365 + ... + 522942.

It is an arithmetic number, because the mean of its divisors is an integer number (13946704830).

Almost surely, 2^55785833723 is an apocalyptic number.

55785833723 is a deficient number, since it is larger than the sum of its proper divisors (985597).

55785833723 is an equidigital number, since it uses as much as digits as its factorization.

55785833723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985596.

The product of its digits is 21168000, while the sum is 56.

The spelling of 55785833723 in words is "fifty-five billion, seven hundred eighty-five million, eight hundred thirty-three thousand, seven hundred twenty-three".