16002640015623 has 48 divisors (see below), whose sum is σ = 25062398000640. Its totient is φ = 10184531933664.

The previous prime is 16002640015487. The next prime is 16002640015627. The reversal of 16002640015623 is 32651004620061.

16002640015623 is a `hidden beast` number, since 1 + 6 + 0 + 0 + 2 + 640 + 0 + 1 + 5 + 6 + 2 + 3 = 666.

It is not a de Polignac number, because 16002640015623 - 2⁹ = 16002640015111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16002640015627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32190 + ... + 5657412.

It is an arithmetic number, because the mean of its divisors is an integer number (522133291680).

Almost surely, 2^{16002640015623} is an apocalyptic number.

16002640015623 is a deficient number, since it is larger than the sum of its proper divisors (9059757985017).

16002640015623 is an equidigital number, since it uses as much as digits as its factorization.

16002640015623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625770 (or 5625758 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 16002640015623 its reverse (32651004620061), we get a palindrome (48653644635684).

The spelling of 16002640015623 in words is "sixteen trillion, two billion, six hundred forty million, fifteen thousand, six hundred twenty-three".