494908661201 has 4 divisors (see below), whose sum is σ = 503021918004. Its totient is φ = 486795404400.

The previous prime is 494908661189. The next prime is 494908661239. The reversal of 494908661201 is 102166809494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102166809494 = 2 ⋅51083404747.

It can be written as a sum of positive squares in 2 ways, for example, as 285326905600 + 209581755601 = 534160^2 + 457801^2 .

It is a cyclic number.

It is not a de Polignac number, because 494908661201 - 2¹⁰ = 494908660177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494908661201.

It is not an unprimeable number, because it can be changed into a prime (494908661251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4056628310 + ... + 4056628431.

It is an arithmetic number, because the mean of its divisors is an integer number (125755479501).

Almost surely, 2^494908661201 is an apocalyptic number.

It is an amenable number.

494908661201 is a deficient number, since it is larger than the sum of its proper divisors (8113256803).

494908661201 is an equidigital number, since it uses as much as digits as its factorization.

494908661201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113256802.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 494908661201 in words is "four hundred ninety-four billion, nine hundred eight million, six hundred sixty-one thousand, two hundred one".