494979648761 has 8 divisors (see below), whose sum is σ = 533068966920. Its totient is φ = 456892324992.

The previous prime is 494979648727. The next prime is 494979648767. The reversal of 494979648761 is 167846979494.

It can be written as a sum of positive squares in 4 ways, for example, as 5588459536 + 489391189225 = 74756^2 + 699565^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 494979648761 - 2²⁶ = 494912539897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494979648767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38291 + ... + 995703.

It is an arithmetic number, because the mean of its divisors is an integer number (66633620865).

Almost surely, 2^494979648761 is an apocalyptic number.

It is an amenable number.

494979648761 is a deficient number, since it is larger than the sum of its proper divisors (38089318159).

494979648761 is a wasteful number, since it uses less digits than its factorization.

494979648761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997195.

The product of its digits is 658409472, while the sum is 74.

The spelling of 494979648761 in words is "four hundred ninety-four billion, nine hundred seventy-nine million, six hundred forty-eight thousand, seven hundred sixty-one".