15554282772 has 96 divisors (see below), whose sum is σ = 43405996032. Its totient is φ = 4238631936.

The previous prime is 15554282747. The next prime is 15554282831. The reversal of 15554282772 is 27728245551.

15554282772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670593 + ... + 693399.

It is an arithmetic number, because the mean of its divisors is an integer number (452145792).

Almost surely, 2^15554282772 is an apocalyptic number.

15554282772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15554282772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21702998016).

15554282772 is an abundant number, since it is smaller than the sum of its proper divisors (27851713260).

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

15554282772 is a wasteful number, since it uses less digits than its factorization.

15554282772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23197 (or 23195 counting only the distinct ones).

The product of its digits is 1568000, while the sum is 48.

The spelling of 15554282772 in words is "fifteen billion, five hundred fifty-four million, two hundred eighty-two thousand, seven hundred seventy-two".