491064194007790 has 32 divisors (see below), whose sum is σ = 964948903059456. Its totient is φ = 178832229131520.

The previous prime is 491064194007727. The next prime is 491064194007847. The reversal of 491064194007790 is 97700491460194.

It is a super-2 number, since 2×491064194007790² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25872708846 + ... + 25872727825.

It is an arithmetic number, because the mean of its divisors is an integer number (30154653220608).

Almost surely, 2^{491064194007790} is an apocalyptic number.

491064194007790 is a deficient number, since it is larger than the sum of its proper divisors (473884709051666).

491064194007790 is a wasteful number, since it uses less digits than its factorization.

491064194007790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51745436764.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 491064194007790 in words is "four hundred ninety-one trillion, sixty-four billion, one hundred ninety-four million, seven thousand, seven hundred ninety".