491023372466 has 8 divisors (see below), whose sum is σ = 803492791344. Its totient is φ = 223192442020.

The previous prime is 491023372457. The next prime is 491023372519. The reversal of 491023372466 is 664273320194.

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

It is a super-2 number, since 2×491023372466² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 491023372466.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11159622080 + ... + 11159622123.

It is an arithmetic number, because the mean of its divisors is an integer number (100436598918).

Almost surely, 2^491023372466 is an apocalyptic number.

491023372466 is a deficient number, since it is larger than the sum of its proper divisors (312469418878).

491023372466 is a wasteful number, since it uses less digits than its factorization.

491023372466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22319244216.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 491023372466 in words is "four hundred ninety-one billion, twenty-three million, three hundred seventy-two thousand, four hundred sixty-six".