55878913572 has 96 divisors (see below), whose sum is σ = 142027022592. Its totient is φ = 17032544256.

The previous prime is 55878913561. The next prime is 55878913577. The reversal of 55878913572 is 27531987855.

It is not an unprimeable number, because it can be changed into a prime (55878913577) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1088548 + ... + 1138724.

It is an arithmetic number, because the mean of its divisors is an integer number (1479448152).

Almost surely, 2^55878913572 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 55878913572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71013511296).

55878913572 is an abundant number, since it is smaller than the sum of its proper divisors (86148109020).

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

55878913572 is a wasteful number, since it uses less digits than its factorization.

55878913572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50357 (or 50355 counting only the distinct ones).

The product of its digits is 21168000, while the sum is 60.

The spelling of 55878913572 in words is "fifty-five billion, eight hundred seventy-eight million, nine hundred thirteen thousand, five hundred seventy-two".