55723918385 has 4 divisors (see below), whose sum is σ = 66868702068. Its totient is φ = 44579134704.

The previous prime is 55723918379. The next prime is 55723918417. The reversal of 55723918385 is 58381932755.

It is a happy number.

55723918385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36698681761 + 19025236624 = 191569^2 + 137932^2 .

It is a cyclic number.

It is not a de Polignac number, because 55723918385 - 2¹² = 55723914289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55723918385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5572391834 + ... + 5572391843.

It is an arithmetic number, because the mean of its divisors is an integer number (16717175517).

Almost surely, 2^55723918385 is an apocalyptic number.

It is an amenable number.

55723918385 is a deficient number, since it is larger than the sum of its proper divisors (11144783683).

55723918385 is a wasteful number, since it uses less digits than its factorization.

55723918385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11144783682.

The product of its digits is 9072000, while the sum is 56.

The spelling of 55723918385 in words is "fifty-five billion, seven hundred twenty-three million, nine hundred eighteen thousand, three hundred eighty-five".