491105065510 has 16 divisors (see below), whose sum is σ = 884038167936. Its totient is φ = 196431126208.

The previous prime is 491105065501. The next prime is 491105065511. The reversal of 491105065510 is 15560501194.

It is a self number, because there is not a number n which added to its sum of digits gives 491105065510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491105065511) 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, 1171999 + ... + 1534858.

It is an arithmetic number, because the mean of its divisors is an integer number (55252385496).

Almost surely, 2^491105065510 is an apocalyptic number.

491105065510 is a deficient number, since it is larger than the sum of its proper divisors (392933102426).

491105065510 is a wasteful number, since it uses less digits than its factorization.

491105065510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725007.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 491105065510 in words is "four hundred ninety-one billion, one hundred five million, sixty-five thousand, five hundred ten".