16442615642623 has 4 divisors (see below), whose sum is σ = 16481671737208. Its totient is φ = 16403559548040.

The previous prime is 16442615642573. The next prime is 16442615642627. The reversal of 16442615642623 is 32624651624461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16442615642623 - 2²⁹ = 16442078771711 is a prime.

It is a super-3 number, since 3×16442615642623³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442615642627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19528046661 + ... + 19528047502.

It is an arithmetic number, because the mean of its divisors is an integer number (4120417934302).

Almost surely, 2^{16442615642623} is an apocalyptic number.

16442615642623 is a deficient number, since it is larger than the sum of its proper divisors (39056094585).

16442615642623 is an equidigital number, since it uses as much as digits as its factorization.

16442615642623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39056094584.

The product of its digits is 9953280, while the sum is 52.

The spelling of 16442615642623 in words is "sixteen trillion, four hundred forty-two billion, six hundred fifteen million, six hundred forty-two thousand, six hundred twenty-three".