671591850049 has 8 divisors (see below), whose sum is σ = 672988356000. Its totient is φ = 670195547616.

The previous prime is 671591850047. The next prime is 671591850079. The reversal of 671591850049 is 940058195176.

It is a happy number.

671591850049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671591850049 - 2¹ = 671591850047 is a prime.

It is a super-2 number, since 2×671591850049² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671591850047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7810002 + ... + 7895524.

It is an arithmetic number, because the mean of its divisors is an integer number (84123544500).

Almost surely, 2^671591850049 is an apocalyptic number.

It is an amenable number.

671591850049 is a deficient number, since it is larger than the sum of its proper divisors (1396505951).

671591850049 is a wasteful number, since it uses less digits than its factorization.

671591850049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101759.

The product of its (nonzero) digits is 2721600, while the sum is 55.

It can be divided in two parts, 671591 and 850049, that added together give a triangular number (1521640 = T₁₇₄₄).

The spelling of 671591850049 in words is "six hundred seventy-one billion, five hundred ninety-one million, eight hundred fifty thousand, forty-nine".