671113552648 has 48 divisors (see below), whose sum is σ = 1596851830800. Its totient is φ = 261472811040.

The previous prime is 671113552609. The next prime is 671113552679. The reversal of 671113552648 is 846255311176.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77814978 + ... + 77823601.

It is an arithmetic number, because the mean of its divisors is an integer number (33267746475).

Almost surely, 2^671113552648 is an apocalyptic number.

It is an amenable number.

671113552648 is an abundant number, since it is smaller than the sum of its proper divisors (925738278152).

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

671113552648 is a wasteful number, since it uses less digits than its factorization.

671113552648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155638610 (or 155638599 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The spelling of 671113552648 in words is "six hundred seventy-one billion, one hundred thirteen million, five hundred fifty-two thousand, six hundred forty-eight".