491154402132454 has 8 divisors (see below), whose sum is σ = 736731697359168. Its totient is φ = 245577169679400.

The previous prime is 491154402132389. The next prime is 491154402132601. The reversal of 491154402132454 is 454231204451194.

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

It is a junction number, because it is equal to n+sod(n) for n = 491154402132398 and 491154402132407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21439464 + ... + 37973140.

It is an arithmetic number, because the mean of its divisors is an integer number (92091462169896).

Almost surely, 2^{491154402132454} is an apocalyptic number.

491154402132454 is a deficient number, since it is larger than the sum of its proper divisors (245577295226714).

491154402132454 is a wasteful number, since it uses less digits than its factorization.

491154402132454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31386830.

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 491154402132454 in words is "four hundred ninety-one trillion, one hundred fifty-four billion, four hundred two million, one hundred thirty-two thousand, four hundred fifty-four".