15556670622 has 80 divisors (see below), whose sum is σ = 37958619600. Its totient is φ = 4743204480.

The previous prime is 15556670617. The next prime is 15556670629. The reversal of 15556670622 is 22607665551.

15556670622 is a `hidden beast` number, since 1 + 5 + 556 + 6 + 70 + 6 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15556670629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2122 + ... + 176402.

It is an arithmetic number, because the mean of its divisors is an integer number (474482745).

Almost surely, 2^15556670622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15556670622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18979309800).

15556670622 is an abundant number, since it is smaller than the sum of its proper divisors (22401948978).

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

15556670622 is a wasteful number, since it uses less digits than its factorization.

15556670622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174343 (or 174334 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 15556670622 in words is "fifteen billion, five hundred fifty-six million, six hundred seventy thousand, six hundred twenty-two".