456288401673821 has 4 divisors (see below), whose sum is σ = 457164195151644. Its totient is φ = 455412608196000.

The previous prime is 456288401673803. The next prime is 456288401673827. The reversal of 456288401673821 is 128376104882654.

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 134011045826596 + 322277355847225 = 11576314^2 + 17952085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-456288401673821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456288401673827) 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, 437896738130 + ... + 437896739171.

It is an arithmetic number, because the mean of its divisors is an integer number (114291048787911).

Almost surely, 2^{456288401673821} is an apocalyptic number.

It is an amenable number.

456288401673821 is a deficient number, since it is larger than the sum of its proper divisors (875793477823).

456288401673821 is an equidigital number, since it uses as much as digits as its factorization.

456288401673821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875793477822.

The product of its (nonzero) digits is 123863040, while the sum is 65.

The spelling of 456288401673821 in words is "four hundred fifty-six trillion, two hundred eighty-eight billion, four hundred one million, six hundred seventy-three thousand, eight hundred twenty-one".