671963994154 has 8 divisors (see below), whose sum is σ = 1008618408000. Its totient is φ = 335757858156.

The previous prime is 671963994139. The next prime is 671963994161. The reversal of 671963994154 is 451499369176.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112065714 + ... + 112071709.

It is an arithmetic number, because the mean of its divisors is an integer number (126077301000).

Almost surely, 2^671963994154 is an apocalyptic number.

671963994154 is a deficient number, since it is larger than the sum of its proper divisors (336654413846).

671963994154 is a wasteful number, since it uses less digits than its factorization.

671963994154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224138924.

The product of its digits is 44089920, while the sum is 64.

The spelling of 671963994154 in words is "six hundred seventy-one billion, nine hundred sixty-three million, nine hundred ninety-four thousand, one hundred fifty-four".