671667112548 has 48 divisors (see below), whose sum is σ = 1788422952960. Its totient is φ = 217837981152.

The previous prime is 671667112517. The next prime is 671667112549. The reversal of 671667112548 is 845211766176.

671667112548 is a `hidden beast` number, since 6 + 7 + 16 + 6 + 71 + 12 + 548 = 666.

It is a super-2 number, since 2×671667112548² (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 a junction number, because it is equal to n+sod(n) for n = 671667112494 and 671667112503.

It is not an unprimeable number, because it can be changed into a prime (671667112549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84038436 + ... + 84046427.

It is an arithmetic number, because the mean of its divisors is an integer number (37258811520).

Almost surely, 2^671667112548 is an apocalyptic number.

It is an amenable number.

671667112548 is an abundant number, since it is smaller than the sum of its proper divisors (1116755840412).

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

671667112548 is a wasteful number, since it uses less digits than its factorization.

671667112548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168084913 (or 168084905 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 671667112548 in words is "six hundred seventy-one billion, six hundred sixty-seven million, one hundred twelve thousand, five hundred forty-eight".