55556223436 has 12 divisors (see below), whose sum is σ = 111112446928. Its totient is φ = 23809810032.

The previous prime is 55556223353. The next prime is 55556223439. The reversal of 55556223436 is 63432265555.

55556223436 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (55556223439) 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, 992075391 + ... + 992075446.

Almost surely, 2^55556223436 is an apocalyptic number.

It is an amenable number.

55556223436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55556223436 is a wasteful number, since it uses less digits than its factorization.

55556223436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984150848 (or 1984150846 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 46.

The spelling of 55556223436 in words is "fifty-five billion, five hundred fifty-six million, two hundred twenty-three thousand, four hundred thirty-six".