15666134022 has 480 divisors, whose sum is σ = 47460188160. Its totient is φ = 3772137600.

The previous prime is 15666134021. The next prime is 15666134023. The reversal of 15666134022 is 22043166651.

It is an interprime number because it is at equal distance from previous prime (15666134021) and next prime (15666134023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15666134021) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 123355323 + ... + 123355449.

It is an arithmetic number, because the mean of its divisors is an integer number (98875392).

Almost surely, 2^15666134022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15666134022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23730094080).

15666134022 is an abundant number, since it is smaller than the sum of its proper divisors (31794054138).

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

15666134022 is a wasteful number, since it uses less digits than its factorization.

15666134022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 15666134022 in words is "fifteen billion, six hundred sixty-six million, one hundred thirty-four thousand, twenty-two".