15487144722066 has 16 divisors (see below), whose sum is σ = 30974963774688. Its totient is φ = 5162269185600.

The previous prime is 15487144722031. The next prime is 15487144722083. The reversal of 15487144722066 is 66022744178451.

15487144722066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15487144721997 and 15487144722015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27798295 + ... + 28349946.

It is an arithmetic number, because the mean of its divisors is an integer number (1935935235918).

Almost surely, 2^{15487144722066} is an apocalyptic number.

15487144722066 is an abundant number, since it is smaller than the sum of its proper divisors (15487819052622).

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

15487144722066 is a wasteful number, since it uses less digits than its factorization.

15487144722066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56194217.

The product of its (nonzero) digits is 18063360, while the sum is 57.

The spelling of 15487144722066 in words is "fifteen trillion, four hundred eighty-seven billion, one hundred forty-four million, seven hundred twenty-two thousand, sixty-six".