16728617540715 has 32 divisors (see below), whose sum is σ = 27246881254656. Its totient is φ = 8762019903360.

The previous prime is 16728617540669. The next prime is 16728617540753. The reversal of 16728617540715 is 51704571682761.

It is a happy number.

It is not a de Polignac number, because 16728617540715 - 2²² = 16728613346411 is a prime.

It is a super-2 number, since 2×16728617540715² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13628329 + ... + 14805018.

It is an arithmetic number, because the mean of its divisors is an integer number (851465039208).

Almost surely, 2^{16728617540715} is an apocalyptic number.

16728617540715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16728617540715 is a deficient number, since it is larger than the sum of its proper divisors (10518263713941).

16728617540715 is a wasteful number, since it uses less digits than its factorization.

16728617540715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28434059.

The product of its (nonzero) digits is 19756800, while the sum is 60.

The spelling of 16728617540715 in words is "sixteen trillion, seven hundred twenty-eight billion, six hundred seventeen million, five hundred forty thousand, seven hundred fifteen".