55583781368 has 16 divisors (see below), whose sum is σ = 104883411480. Its totient is φ = 27614871648.

The previous prime is 55583781367. The next prime is 55583781413. The reversal of 55583781368 is 86318738555.

55583781368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55583781367) 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, 22126046 + ... + 22128557.

Almost surely, 2^55583781368 is an apocalyptic number.

It is an amenable number.

55583781368 is a deficient number, since it is larger than the sum of its proper divisors (49299630112).

55583781368 is a wasteful number, since it uses less digits than its factorization.

55583781368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44254766 (or 44254762 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 59.

The spelling of 55583781368 in words is "fifty-five billion, five hundred eighty-three million, seven hundred eighty-one thousand, three hundred sixty-eight".