495291619681 has 8 divisors (see below), whose sum is σ = 516928480704. Its totient is φ = 473663295600.

The previous prime is 495291619633. The next prime is 495291619699. The reversal of 495291619681 is 186916192594.

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 495291619681 - 2¹⁵ = 495291586913 is a prime.

It is a super-2 number, since 2×495291619681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495291611681) 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, 2015526 + ... + 2247871.

It is an arithmetic number, because the mean of its divisors is an integer number (64616060088).

Almost surely, 2^495291619681 is an apocalyptic number.

It is an amenable number.

495291619681 is a deficient number, since it is larger than the sum of its proper divisors (21636861023).

495291619681 is a wasteful number, since it uses less digits than its factorization.

495291619681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268471.

The product of its digits is 8398080, while the sum is 61.

The spelling of 495291619681 in words is "four hundred ninety-five billion, two hundred ninety-one million, six hundred nineteen thousand, six hundred eighty-one".