492442655720401 has 9 divisors (see below), whose sum is σ = 493004039935753. Its totient is φ = 491881910103220.

The previous prime is 492442655720359. The next prime is 492442655720437. The reversal of 492442655720401 is 104027556244294.

It is a happy number.

The square root of 492442655720401 is 22191049.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 492442655720401 - 2⁴¹ = 490243632464849 is a prime.

It is a super-2 number, since 2×492442655720401² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492442655730401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20216033460 + ... + 20216057818.

Almost surely, 2^{492442655720401} is an apocalyptic number.

492442655720401 is the 22191049-th square number.

492442655720401 is the 11095525-th centered octagonal number.

It is an amenable number.

492442655720401 is a deficient number, since it is larger than the sum of its proper divisors (561384215352).

492442655720401 is an frugal number, since it uses more digits than its factorization.

492442655720401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50540 (or 25270 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 55.

The spelling of 492442655720401 in words is "four hundred ninety-two trillion, four hundred forty-two billion, six hundred fifty-five million, seven hundred twenty thousand, four hundred one".