493967647491 has 8 divisors (see below), whose sum is σ = 658710187200. Its totient is φ = 329268436392.

The previous prime is 493967647469. The next prime is 493967647493. The reversal of 493967647491 is 194746769394.

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

It is not a de Polignac number, because 493967647491 - 2⁹ = 493967646979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (493967647493) 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, 10805541 + ... + 10851158.

It is an arithmetic number, because the mean of its divisors is an integer number (82338773400).

Almost surely, 2^493967647491 is an apocalyptic number.

493967647491 is a deficient number, since it is larger than the sum of its proper divisors (164742539709).

493967647491 is a wasteful number, since it uses less digits than its factorization.

493967647491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21664305.

The product of its digits is 246903552, while the sum is 69.

The spelling of 493967647491 in words is "four hundred ninety-three billion, nine hundred sixty-seven million, six hundred forty-seven thousand, four hundred ninety-one".