492656609261 has 4 divisors (see below), whose sum is σ = 493061422812. Its totient is φ = 492251795712.

The previous prime is 492656609251. The next prime is 492656609309. The reversal of 492656609261 is 162906656294.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162906656294 = 2 ⋅81453328147.

It can be written as a sum of positive squares in 2 ways, for example, as 67285247236 + 425371362025 = 259394^2 + 652205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-492656609261 is a prime.

It is a super-2 number, since 2×492656609261² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 492656609197 and 492656609206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492656609251) 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, 202404950 + ... + 202407383.

It is an arithmetic number, because the mean of its divisors is an integer number (123265355703).

Almost surely, 2^492656609261 is an apocalyptic number.

It is an amenable number.

492656609261 is a deficient number, since it is larger than the sum of its proper divisors (404813551).

492656609261 is a wasteful number, since it uses less digits than its factorization.

492656609261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404813550.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 492656609261 in words is "four hundred ninety-two billion, six hundred fifty-six million, six hundred nine thousand, two hundred sixty-one".