671553534788 has 12 divisors (see below), whose sum is σ = 1175291205312. Its totient is φ = 335756047560.

The previous prime is 671553534767. The next prime is 671553534797. The reversal of 671553534788 is 887435355176.

It is a self number, because there is not a number n which added to its sum of digits gives 671553534788.

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, 5106920 + ... + 5236767.

It is an arithmetic number, because the mean of its divisors is an integer number (97940933776).

Almost surely, 2^671553534788 is an apocalyptic number.

It is an amenable number.

671553534788 is a deficient number, since it is larger than the sum of its proper divisors (503737670524).

671553534788 is a wasteful number, since it uses less digits than its factorization.

671553534788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359922 (or 10359920 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 62.

The spelling of 671553534788 in words is "six hundred seventy-one billion, five hundred fifty-three million, five hundred thirty-four thousand, seven hundred eighty-eight".