15854132116417 has 4 divisors (see below), whose sum is σ = 18119008133056. Its totient is φ = 13589256099780.

The previous prime is 15854132116379. The next prime is 15854132116423. The reversal of 15854132116417 is 71461123145851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15854132116417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15854132116217) 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, 1132438008309 + ... + 1132438008322.

It is an arithmetic number, because the mean of its divisors is an integer number (4529752033264).

Almost surely, 2^{15854132116417} is an apocalyptic number.

It is an amenable number.

15854132116417 is a deficient number, since it is larger than the sum of its proper divisors (2264876016639).

15854132116417 is an equidigital number, since it uses as much as digits as its factorization.

15854132116417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264876016638.

The product of its digits is 806400, while the sum is 49.

The spelling of 15854132116417 in words is "fifteen trillion, eight hundred fifty-four billion, one hundred thirty-two million, one hundred sixteen thousand, four hundred seventeen".