166000551000 has 64 divisors (see below), whose sum is σ = 517921728480. Its totient is φ = 44266812800.

The previous prime is 166000550993. The next prime is 166000551019. The reversal of 166000551000 is 155000661.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27663759 + ... + 27669758.

Almost surely, 2^166000551000 is an apocalyptic number.

166000551000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166000551000 is an abundant number, since it is smaller than the sum of its proper divisors (351921177480).

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

166000551000 is a wasteful number, since it uses less digits than its factorization.

166000551000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55333541 (or 55333527 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 166000551000 its reverse (155000661), we get a palindrome (166155551661).

The spelling of 166000551000 in words is "one hundred sixty-six billion, five hundred fifty-one thousand".