166501315532552 has 192 divisors, whose sum is σ = 422224071465600. Its totient is φ = 59773066629120.

The previous prime is 166501315532467. The next prime is 166501315532579. The reversal of 166501315532552 is 255235513105661.

It is a happy number.

166501315532552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166501315532552.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56550224 + ... + 59421632.

It is an arithmetic number, because the mean of its divisors is an integer number (2199083705550).

Almost surely, 2^{166501315532552} 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 166501315532552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211112035732800).

166501315532552 is an abundant number, since it is smaller than the sum of its proper divisors (255722755933048).

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

166501315532552 is a wasteful number, since it uses less digits than its factorization.

166501315532552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872016 (or 2871999 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 166501315532552 in words is "one hundred sixty-six trillion, five hundred one billion, three hundred fifteen million, five hundred thirty-two thousand, five hundred fifty-two".