490591057791 has 16 divisors (see below), whose sum is σ = 688563699200. Its totient is φ = 309840303168.

The previous prime is 490591057763. The next prime is 490591057807. The reversal of 490591057791 is 197750195094.

It is a happy number.

It is not a de Polignac number, because 490591057791 - 2²⁶ = 490523948927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490591057291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5147130 + ... + 5241576.

It is an arithmetic number, because the mean of its divisors is an integer number (43035231200).

Almost surely, 2^490591057791 is an apocalyptic number.

490591057791 is a deficient number, since it is larger than the sum of its proper divisors (197972641409).

490591057791 is a wasteful number, since it uses less digits than its factorization.

490591057791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185598.

The product of its (nonzero) digits is 3572100, while the sum is 57.

The spelling of 490591057791 in words is "four hundred ninety billion, five hundred ninety-one million, fifty-seven thousand, seven hundred ninety-one".