6446564424231 has 4 divisors (see below), whose sum is σ = 8595419232312. Its totient is φ = 4297709616152.

The previous prime is 6446564424211. The next prime is 6446564424269. The reversal of 6446564424231 is 1324244656446.

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

It is a cyclic number.

It is not a de Polignac number, because 6446564424231 - 2²⁶ = 6446497315367 is a prime.

It is a super-2 number, since 2×6446564424231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446564424211) 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, 1074427404036 + ... + 1074427404041.

It is an arithmetic number, because the mean of its divisors is an integer number (2148854808078).

Almost surely, 2^{6446564424231} is an apocalyptic number.

6446564424231 is a deficient number, since it is larger than the sum of its proper divisors (2148854808081).

6446564424231 is a wasteful number, since it uses less digits than its factorization.

6446564424231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148854808080.

The product of its digits is 13271040, while the sum is 51.

The spelling of 6446564424231 in words is "six trillion, four hundred forty-six billion, five hundred sixty-four million, four hundred twenty-four thousand, two hundred thirty-one".