491463014251 has 8 divisors (see below), whose sum is σ = 553436356608. Its totient is φ = 432372153000.

The previous prime is 491463014221. The next prime is 491463014279. The reversal of 491463014251 is 152410364194.

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 491463014251 - 2⁹ = 491463013739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491463014201) 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, 720619915 + ... + 720620596.

It is an arithmetic number, because the mean of its divisors is an integer number (69179544576).

Almost surely, 2^491463014251 is an apocalyptic number.

491463014251 is a deficient number, since it is larger than the sum of its proper divisors (61973342357).

491463014251 is a wasteful number, since it uses less digits than its factorization.

491463014251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441240553.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 491463014251 in words is "four hundred ninety-one billion, four hundred sixty-three million, fourteen thousand, two hundred fifty-one".