55786200784 has 80 divisors (see below), whose sum is σ = 116612536320. Its totient is φ = 25793187840.

The previous prime is 55786200779. The next prime is 55786200817. The reversal of 55786200784 is 48700268755.

It is a super-2 number, since 2×55786200784² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 1375257 + ... + 1415239.

It is an arithmetic number, because the mean of its divisors is an integer number (1457656704).

Almost surely, 2^55786200784 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 55786200784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58306268160).

55786200784 is an abundant number, since it is smaller than the sum of its proper divisors (60826335536).

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

55786200784 is a wasteful number, since it uses less digits than its factorization.

55786200784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40148 (or 40142 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 52.

The spelling of 55786200784 in words is "fifty-five billion, seven hundred eighty-six million, two hundred thousand, seven hundred eighty-four".