491460121064195 has 16 divisors (see below), whose sum is σ = 593380281262080. Its totient is φ = 390749421030624.

The previous prime is 491460121064173. The next prime is 491460121064221. The reversal of 491460121064195 is 591460121064194.

It is a cyclic number.

It is not a de Polignac number, because 491460121064195 - 2²⁸ = 491459852628739 is a prime.

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, 43460222 + ... + 53588348.

It is an arithmetic number, because the mean of its divisors is an integer number (37086267578880).

Almost surely, 2^{491460121064195} is an apocalyptic number.

491460121064195 is a deficient number, since it is larger than the sum of its proper divisors (101920160197885).

491460121064195 is a wasteful number, since it uses less digits than its factorization.

491460121064195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187834.

The product of its (nonzero) digits is 1866240, while the sum is 53.

Subtracting 491460121064195 from its reverse (591460121064194), we obtain a palindrome (99999999999999).

The spelling of 491460121064195 in words is "four hundred ninety-one trillion, four hundred sixty billion, one hundred twenty-one million, sixty-four thousand, one hundred ninety-five".