16390038804005 has 4 divisors (see below), whose sum is σ = 19668046564812. Its totient is φ = 13112031043200.

The previous prime is 16390038803951. The next prime is 16390038804133. The reversal of 16390038804005 is 50040883009361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9104455334881 + 7285583469124 = 3017359^2 + 2699182^2 .

It is not a de Polignac number, because 16390038804005 - 2²² = 16390034609701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639003880396 + ... + 1639003880405.

It is an arithmetic number, because the mean of its divisors is an integer number (4917011641203).

Almost surely, 2^{16390038804005} is an apocalyptic number.

It is an amenable number.

16390038804005 is a deficient number, since it is larger than the sum of its proper divisors (3278007760807).

16390038804005 is an equidigital number, since it uses as much as digits as its factorization.

16390038804005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278007760806.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 16390038804005 in words is "sixteen trillion, three hundred ninety billion, thirty-eight million, eight hundred four thousand, five".