166071055551210 has 64 divisors (see below), whose sum is σ = 444693725688960. Its totient is φ = 44101857058560.

The previous prime is 166071055551097. The next prime is 166071055551251. The reversal of 166071055551210 is 12155550170661.

166071055551210 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 71 + 0 + 5 + 5 + 551 + 21 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1276030332 + ... + 1276160471.

It is an arithmetic number, because the mean of its divisors is an integer number (6948339463890).

Almost surely, 2^{166071055551210} is an apocalyptic number.

166071055551210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166071055551210 is an abundant number, since it is smaller than the sum of its proper divisors (278622670137750).

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

166071055551210 is a wasteful number, since it uses less digits than its factorization.

166071055551210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552191060 (or 2552191054 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 45.

The spelling of 166071055551210 in words is "one hundred sixty-six trillion, seventy-one billion, fifty-five million, five hundred fifty-one thousand, two hundred ten".