55115783072 has 96 divisors (see below), whose sum is σ = 133721642880. Its totient is φ = 21831966720.

The previous prime is 55115783059. The next prime is 55115783081. The reversal of 55115783072 is 27038751155.

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, 16568 + ... + 332424.

It is an arithmetic number, because the mean of its divisors is an integer number (1392933780).

Almost surely, 2^55115783072 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 55115783072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66860821440).

55115783072 is an abundant number, since it is smaller than the sum of its proper divisors (78605859808).

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

55115783072 is a wasteful number, since it uses less digits than its factorization.

55115783072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315934 (or 315926 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 44.

The spelling of 55115783072 in words is "fifty-five billion, one hundred fifteen million, seven hundred eighty-three thousand, seventy-two".