16312763816815 has 8 divisors (see below), whose sum is σ = 20052763326288. Its totient is φ = 12731913222720.

The previous prime is 16312763816773. The next prime is 16312763816819. The reversal of 16312763816815 is 51861836721361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16312763816815 - 2¹³ = 16312763808623 is a prime.

It is a super-2 number, since 2×16312763816815² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16312763816815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16312763816819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39787228617 + ... + 39787229026.

It is an arithmetic number, because the mean of its divisors is an integer number (2506595415786).

Almost surely, 2^{16312763816815} is an apocalyptic number.

16312763816815 is a deficient number, since it is larger than the sum of its proper divisors (3739999509473).

16312763816815 is an equidigital number, since it uses as much as digits as its factorization.

16312763816815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79574457689.

The product of its digits is 8709120, while the sum is 58.

The spelling of 16312763816815 in words is "sixteen trillion, three hundred twelve billion, seven hundred sixty-three million, eight hundred sixteen thousand, eight hundred fifteen".