671743248066 has 32 divisors (see below), whose sum is σ = 1628468481600. Its totient is φ = 203558559840.

The previous prime is 671743248049. The next prime is 671743248097. The reversal of 671743248066 is 660842347176.

671743248066 is a `hidden beast` number, since 6 + 7 + 1 + 74 + 32 + 480 + 66 = 666.

It is a super-2 number, since 2×671743248066² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 565439851 + ... + 565441038.

It is an arithmetic number, because the mean of its divisors is an integer number (50889640050).

Almost surely, 2^671743248066 is an apocalyptic number.

671743248066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

671743248066 is an abundant number, since it is smaller than the sum of its proper divisors (956725233534).

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

671743248066 is a wasteful number, since it uses less digits than its factorization.

671743248066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130880911 (or 1130880905 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 671743248066 in words is "six hundred seventy-one billion, seven hundred forty-three million, two hundred forty-eight thousand, sixty-six".