16065066015615 has 32 divisors (see below), whose sum is σ = 26399903717376. Its totient is φ = 8336121678720.

The previous prime is 16065066015611. The next prime is 16065066015617. The reversal of 16065066015615 is 51651066056061.

It is not a de Polignac number, because 16065066015615 - 2² = 16065066015611 is a prime.

It is a super-2 number, since 2×16065066015615² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16065066015611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13105764 + ... + 14279046.

It is an arithmetic number, because the mean of its divisors is an integer number (824996991168).

Almost surely, 2^{16065066015615} is an apocalyptic number.

16065066015615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16065066015615 is a deficient number, since it is larger than the sum of its proper divisors (10334837701761).

16065066015615 is a wasteful number, since it uses less digits than its factorization.

16065066015615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197999.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 16065066015615 in words is "sixteen trillion, sixty-five billion, sixty-six million, fifteen thousand, six hundred fifteen".