491662714431 has 16 divisors (see below), whose sum is σ = 793270934784. Its totient is φ = 264423644544.

The previous prime is 491662714429. The next prime is 491662714471. The reversal of 491662714431 is 134417266194.

It is not a de Polignac number, because 491662714431 - 2¹ = 491662714429 is a prime.

It is a super-2 number, since 2×491662714431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491662714471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688602885 + ... + 688603598.

It is an arithmetic number, because the mean of its divisors is an integer number (49579433424).

Almost surely, 2^491662714431 is an apocalyptic number.

491662714431 is a deficient number, since it is larger than the sum of its proper divisors (301608220353).

491662714431 is a wasteful number, since it uses less digits than its factorization.

491662714431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377206510.

The product of its digits is 870912, while the sum is 48.

The spelling of 491662714431 in words is "four hundred ninety-one billion, six hundred sixty-two million, seven hundred fourteen thousand, four hundred thirty-one".