491252650158 has 16 divisors (see below), whose sum is σ = 982677707856. Its totient is φ = 163722148800.

The previous prime is 491252650139. The next prime is 491252650177. The reversal of 491252650158 is 851056252194.

It is an interprime number because it is at equal distance from previous prime (491252650139) and next prime (491252650177).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7146591 + ... + 7215002.

It is an arithmetic number, because the mean of its divisors is an integer number (61417356741).

Almost surely, 2^491252650158 is an apocalyptic number.

491252650158 is an abundant number, since it is smaller than the sum of its proper divisors (491425057698).

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

491252650158 is a wasteful number, since it uses less digits than its factorization.

491252650158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14367299.

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 491252650158 in words is "four hundred ninety-one billion, two hundred fifty-two million, six hundred fifty thousand, one hundred fifty-eight".