55736366728 has 64 divisors (see below), whose sum is σ = 121973616000. Its totient is φ = 23867202240.

The previous prime is 55736366717. The next prime is 55736366731. The reversal of 55736366728 is 82766363755.

55736366728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3578638 + ... + 3594178.

It is an arithmetic number, because the mean of its divisors is an integer number (1905837750).

Almost surely, 2^55736366728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55736366728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60986808000).

55736366728 is an abundant number, since it is smaller than the sum of its proper divisors (66237249272).

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

55736366728 is a wasteful number, since it uses less digits than its factorization.

55736366728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16875 (or 16857 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 58.

The spelling of 55736366728 in words is "fifty-five billion, seven hundred thirty-six million, three hundred sixty-six thousand, seven hundred twenty-eight".