15809268642047 has 16 divisors (see below), whose sum is σ = 15911575680000. Its totient is φ = 15707313974880.

The previous prime is 15809268642029. The next prime is 15809268642049. The reversal of 15809268642047 is 74024686290851.

It is a cyclic number.

It is not a de Polignac number, because 15809268642047 - 2⁶ = 15809268641983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15809268642049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312120878 + ... + 312171524.

It is an arithmetic number, because the mean of its divisors is an integer number (994473480000).

Almost surely, 2^{15809268642047} is an apocalyptic number.

15809268642047 is a deficient number, since it is larger than the sum of its proper divisors (102307037953).

15809268642047 is a wasteful number, since it uses less digits than its factorization.

15809268642047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54086.

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 15809268642047 in words is "fifteen trillion, eight hundred nine billion, two hundred sixty-eight million, six hundred forty-two thousand, forty-seven".