460778036581 has 4 divisors (see below), whose sum is σ = 460782953964. Its totient is φ = 460773119200.

The previous prime is 460778036531. The next prime is 460778036591. The reversal of 460778036581 is 185630877064.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 201865997025 + 258912039556 = 449295^2 + 508834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-460778036581 is a prime.

It is a super-2 number, since 2×460778036581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (460778036531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2315350 + ... + 2506471.

It is an arithmetic number, because the mean of its divisors is an integer number (115195738491).

Almost surely, 2^460778036581 is an apocalyptic number.

It is an amenable number.

460778036581 is a deficient number, since it is larger than the sum of its proper divisors (4917383).

460778036581 is an equidigital number, since it uses as much as digits as its factorization.

460778036581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917382.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 460778036581 in words is "four hundred sixty billion, seven hundred seventy-eight million, thirty-six thousand, five hundred eighty-one".