6456221023 has 16 divisors (see below), whose sum is σ = 7529448960. Its totient is φ = 5421046176.

The previous prime is 6456221017. The next prime is 6456221027. The reversal of 6456221023 is 3201226546.

It is not a de Polignac number, because 6456221023 - 2¹³ = 6456212831 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 (6456221027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231286 + ... + 257692.

It is an arithmetic number, because the mean of its divisors is an integer number (470590560).

Almost surely, 2^6456221023 is an apocalyptic number.

6456221023 is a deficient number, since it is larger than the sum of its proper divisors (1073227937).

6456221023 is a wasteful number, since it uses less digits than its factorization.

6456221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27126.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 6456221023 is about 80350.6130841576. The cubic root of 6456221023 is about 1862.0562513123.

Adding to 6456221023 its reverse (3201226546), we get a palindrome (9657447569).

The spelling of 6456221023 in words is "six billion, four hundred fifty-six million, two hundred twenty-one thousand, twenty-three".