55783785132 has 36 divisors (see below), whose sum is σ = 144630991960. Its totient is φ = 18593776872.

The previous prime is 55783785131. The next prime is 55783785139. The reversal of 55783785132 is 23158738755.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

55783785132 is a `hidden beast` number, since 5 + 57 + 8 + 3 + 78 + 513 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×55783785132² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (55783785131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2443153 + ... + 2465879.

Almost surely, 2^55783785132 is an apocalyptic number.

It is an amenable number.

55783785132 is an abundant number, since it is smaller than the sum of its proper divisors (88847206828).

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

55783785132 is an frugal number, since it uses more digits than its factorization.

55783785132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45467 (or 22732 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 54.

The spelling of 55783785132 in words is "fifty-five billion, seven hundred eighty-three million, seven hundred eighty-five thousand, one hundred thirty-two".