15561706422 has 8 divisors (see below), whose sum is σ = 31123412856. Its totient is φ = 5187235472.

The previous prime is 15561706409. The next prime is 15561706423. The reversal of 15561706422 is 22460716551.

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

15561706422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15561706423) 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, 1296808863 + ... + 1296808874.

It is an arithmetic number, because the mean of its divisors is an integer number (3890426607).

Almost surely, 2^15561706422 is an apocalyptic number.

15561706422 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.

15561706422 is a wasteful number, since it uses less digits than its factorization.

15561706422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593617742.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 15561706422 in words is "fifteen billion, five hundred sixty-one million, seven hundred six thousand, four hundred twenty-two".