494539640524799 has 16 divisors (see below), whose sum is σ = 502902243302400. Its totient is φ = 486231342795744.

The previous prime is 494539640524789. The next prime is 494539640524807. The reversal of 494539640524799 is 997425046935494.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 494539640524799 - 2⁴⁴ = 476947454480383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494539640524789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38775524 + ... + 49926150.

It is an arithmetic number, because the mean of its divisors is an integer number (31431390206400).

Almost surely, 2^{494539640524799} is an apocalyptic number.

494539640524799 is a deficient number, since it is larger than the sum of its proper divisors (8362602777601).

494539640524799 is a wasteful number, since it uses less digits than its factorization.

494539640524799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11153062.

The product of its (nonzero) digits is 10581580800, while the sum is 80.

The spelling of 494539640524799 in words is "four hundred ninety-four trillion, five hundred thirty-nine billion, six hundred forty million, five hundred twenty-four thousand, seven hundred ninety-nine".