15797474278405 has 8 divisors (see below), whose sum is σ = 18959638044672. Its totient is φ = 12636200149008.

The previous prime is 15797474278393. The next prime is 15797474278429. The reversal of 15797474278405 is 50487247479751.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15797474278405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222370149 + ... + 222441178.

It is an arithmetic number, because the mean of its divisors is an integer number (2369954755584).

Almost surely, 2^{15797474278405} is an apocalyptic number.

It is an amenable number.

15797474278405 is a deficient number, since it is larger than the sum of its proper divisors (3162163766267).

15797474278405 is an equidigital number, since it uses as much as digits as its factorization.

15797474278405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444818435.

The product of its (nonzero) digits is 553190400, while the sum is 70.

The spelling of 15797474278405 in words is "fifteen trillion, seven hundred ninety-seven billion, four hundred seventy-four million, two hundred seventy-eight thousand, four hundred five".