166562061550 has 48 divisors (see below), whose sum is σ = 317524266432. Its totient is φ = 64974963200.

The previous prime is 166562061517. The next prime is 166562061557. The reversal of 166562061550 is 55160265661.

It is a junction number, because it is equal to n+sod(n) for n = 166562061497 and 166562061506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166562061557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534234 + ... + 786466.

It is an arithmetic number, because the mean of its divisors is an integer number (6615088884).

Almost surely, 2^166562061550 is an apocalyptic number.

166562061550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166562061550 is a deficient number, since it is larger than the sum of its proper divisors (150962204882).

166562061550 is a wasteful number, since it uses less digits than its factorization.

166562061550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252573 (or 252568 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 166562061550 in words is "one hundred sixty-six billion, five hundred sixty-two million, sixty-one thousand, five hundred fifty".