55064745840 has 160 divisors (see below), whose sum is σ = 183934227456. Its totient is φ = 13546828800.

The previous prime is 55064745829. The next prime is 55064745863. The reversal of 55064745840 is 4854746055.

55064745840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 55064745840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7331367 + ... + 7338873.

Almost surely, 2^55064745840 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 55064745840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91967113728).

55064745840 is an abundant number, since it is smaller than the sum of its proper divisors (128869481616).

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

55064745840 is a wasteful number, since it uses less digits than its factorization.

55064745840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887 (or 9881 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 48.

The spelling of 55064745840 in words is "fifty-five billion, sixty-four million, seven hundred forty-five thousand, eight hundred forty".