55431846722 has 54 divisors (see below), whose sum is σ = 102820676697. Its totient is φ = 22343082048.

The previous prime is 55431846661. The next prime is 55431846731. The reversal of 55431846722 is 22764813455.

It can be written as a sum of positive squares in 2 ways, for example, as 50732607121 + 4699239601 = 225239^2 + 68551^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=166481.

It is a super-2 number, since 2×55431846722² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 39621779 + ... + 39623177.

Almost surely, 2^55431846722 is an apocalyptic number.

55431846722 is a deficient number, since it is larger than the sum of its proper divisors (47388829975).

55431846722 is an equidigital number, since it uses as much as digits as its factorization.

55431846722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 1425 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 47.

The spelling of 55431846722 in words is "fifty-five billion, four hundred thirty-one million, eight hundred forty-six thousand, seven hundred twenty-two".