15728714468 has 6 divisors (see below), whose sum is σ = 27525250326. Its totient is φ = 7864357232.

The previous prime is 15728714461. The next prime is 15728714471. The reversal of 15728714468 is 86441782751.

It can be written as a sum of positive squares in only one way, i.e., 12196551844 + 3532162624 = 110438^2 + 59432^2 .

It is not an unprimeable number, because it can be changed into a prime (15728714461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1966089305 + ... + 1966089312.

It is an arithmetic number, because the mean of its divisors is an integer number (4587541721).

Almost surely, 2^15728714468 is an apocalyptic number.

It is an amenable number.

15728714468 is a deficient number, since it is larger than the sum of its proper divisors (11796535858).

15728714468 is a wasteful number, since it uses less digits than its factorization.

15728714468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932178621 (or 3932178619 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 53.

The spelling of 15728714468 in words is "fifteen billion, seven hundred twenty-eight million, seven hundred fourteen thousand, four hundred sixty-eight".