15856422426066 has 8 divisors (see below), whose sum is σ = 31712844852144. Its totient is φ = 5285474142020.

The previous prime is 15856422426029. The next prime is 15856422426107. The reversal of 15856422426066 is 66062422465851.

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

15856422426066 is an admirable number.

It is a super-2 number, since 2×15856422426066² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15856422425997 and 15856422426015.

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, 1321368535500 + ... + 1321368535511.

It is an arithmetic number, because the mean of its divisors is an integer number (3964105606518).

Almost surely, 2^{15856422426066} is an apocalyptic number.

15856422426066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15856422426066 is a wasteful number, since it uses less digits than its factorization.

15856422426066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642737071016.

The product of its (nonzero) digits is 33177600, while the sum is 57.

The spelling of 15856422426066 in words is "fifteen trillion, eight hundred fifty-six billion, four hundred twenty-two million, four hundred twenty-six thousand, sixty-six".