490292685661 has 4 divisors (see below), whose sum is σ = 490294100800. Its totient is φ = 490291270524.

The previous prime is 490292685611. The next prime is 490292685703. The reversal of 490292685661 is 166586292094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 490292685661 - 2¹⁵ = 490292652893 is a prime.

It is a super-2 number, since 2×490292685661² (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 = 490292685596 and 490292685605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490292685611) 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, 201100 + ... + 1010458.

It is an arithmetic number, because the mean of its divisors is an integer number (122573525200).

Almost surely, 2^490292685661 is an apocalyptic number.

It is an amenable number.

490292685661 is a deficient number, since it is larger than the sum of its proper divisors (1415139).

490292685661 is an equidigital number, since it uses as much as digits as its factorization.

490292685661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415138.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 490292685661 in words is "four hundred ninety billion, two hundred ninety-two million, six hundred eighty-five thousand, six hundred sixty-one".