126320564005 has 32 divisors (see below), whose sum is σ = 164071454976. Its totient is φ = 93121104384.

The previous prime is 126320563981. The next prime is 126320564087. The reversal of 126320564005 is 500465023621.

It is a cyclic number.

It is not a de Polignac number, because 126320564005 - 2⁹ = 126320563493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186019 + ... + 535951.

It is an arithmetic number, because the mean of its divisors is an integer number (5127232968).

Almost surely, 2^126320564005 is an apocalyptic number.

It is an amenable number.

126320564005 is a deficient number, since it is larger than the sum of its proper divisors (37750890971).

126320564005 is a wasteful number, since it uses less digits than its factorization.

126320564005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350077.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 126320564005 its reverse (500465023621), we get a palindrome (626785587626).

The spelling of 126320564005 in words is "one hundred twenty-six billion, three hundred twenty million, five hundred sixty-four thousand, five".