491271855350 has 24 divisors (see below), whose sum is σ = 914497365000. Its totient is φ = 196351384320.

The previous prime is 491271855337. The next prime is 491271855377. The reversal of 491271855350 is 53558172194.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

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, 3870872 + ... + 3995771.

It is an arithmetic number, because the mean of its divisors is an integer number (38104056875).

Almost surely, 2^491271855350 is an apocalyptic number.

491271855350 is a deficient number, since it is larger than the sum of its proper divisors (423225509650).

491271855350 is a wasteful number, since it uses less digits than its factorization.

491271855350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7867904 (or 7867899 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 491271855350 in words is "four hundred ninety-one billion, two hundred seventy-one million, eight hundred fifty-five thousand, three hundred fifty".