15480742668 has 12 divisors (see below), whose sum is σ = 36121732920. Its totient is φ = 5160247552.

The previous prime is 15480742663. The next prime is 15480742679. The reversal of 15480742668 is 86624708451.

15480742668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 15480742668.

It is not an unprimeable number, because it can be changed into a prime (15480742663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 645030933 + ... + 645030956.

It is an arithmetic number, because the mean of its divisors is an integer number (3010144410).

Almost surely, 2^15480742668 is an apocalyptic number.

It is an amenable number.

15480742668 is an abundant number, since it is smaller than the sum of its proper divisors (20640990252).

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

15480742668 is a wasteful number, since it uses less digits than its factorization.

15480742668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290061896 (or 1290061894 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 15480742668 in words is "fifteen billion, four hundred eighty million, seven hundred forty-two thousand, six hundred sixty-eight".