55769720832 has 432 divisors, whose sum is σ = 194395481280. Its totient is φ = 15927238656.

The previous prime is 55769720827. The next prime is 55769720849. The reversal of 55769720832 is 23802796755.

55769720832 is a `hidden beast` number, since 557 + 6 + 9 + 7 + 2 + 0 + 83 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a super-2 number, since 2×55769720832² (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 a nialpdrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24384393 + ... + 24386679.

It is an arithmetic number, because the mean of its divisors is an integer number (449989540).

Almost surely, 2^55769720832 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 55769720832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97197740640).

55769720832 is an abundant number, since it is smaller than the sum of its proper divisors (138625760448).

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

55769720832 is an equidigital number, since it uses as much as digits as its factorization.

55769720832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338 (or 2299 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 55769720832 in words is "fifty-five billion, seven hundred sixty-nine million, seven hundred twenty thousand, eight hundred thirty-two".