15666464355036 has 96 divisors (see below), whose sum is σ = 41626498088448. Its totient is φ = 4539434127360.

The previous prime is 15666464355023. The next prime is 15666464355041. The reversal of 15666464355036 is 63055346466651.

It is a super-2 number, since 2×15666464355036² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7904676 + ... + 9685908.

It is an arithmetic number, because the mean of its divisors is an integer number (433609355088).

Almost surely, 2^{15666464355036} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15666464355036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20813249044224).

15666464355036 is an abundant number, since it is smaller than the sum of its proper divisors (25960033733412).

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

15666464355036 is a wasteful number, since it uses less digits than its factorization.

15666464355036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784171 (or 1784169 counting only the distinct ones).

The product of its (nonzero) digits is 139968000, while the sum is 60.

The spelling of 15666464355036 in words is "fifteen trillion, six hundred sixty-six billion, four hundred sixty-four million, three hundred fifty-five thousand, thirty-six".