55783581696 has 144 divisors (see below), whose sum is σ = 169593933600. Its totient is φ = 17615757312.

The previous prime is 55783581661. The next prime is 55783581701. The reversal of 55783581696 is 69618538755.

55783581696 is a `hidden beast` number, since 5 + 578 + 3 + 58 + 1 + 6 + 9 + 6 = 666.

55783581696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×55783581696² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270565 + ... + 429851.

It is an arithmetic number, because the mean of its divisors is an integer number (1177735650).

Almost surely, 2^55783581696 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 55783581696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84796966800).

55783581696 is an abundant number, since it is smaller than the sum of its proper divisors (113810351904).

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

55783581696 is a wasteful number, since it uses less digits than its factorization.

55783581696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159334 (or 159311 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 63.

The spelling of 55783581696 in words is "fifty-five billion, seven hundred eighty-three million, five hundred eighty-one thousand, six hundred ninety-six".