491602449378 has 8 divisors (see below), whose sum is σ = 983204898768. Its totient is φ = 163867483124.

The previous prime is 491602449353. The next prime is 491602449383. The reversal of 491602449378 is 873944206194.

491602449378 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

491602449378 is an admirable number.

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, 40966870776 + ... + 40966870787.

It is an arithmetic number, because the mean of its divisors is an integer number (122900612346).

Almost surely, 2^491602449378 is an apocalyptic number.

491602449378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491602449378 is a wasteful number, since it uses less digits than its factorization.

491602449378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81933741568.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 491602449378 in words is "four hundred ninety-one billion, six hundred two million, four hundred forty-nine thousand, three hundred seventy-eight".