1645432263326 has 32 divisors (see below), whose sum is σ = 2479345597440. Its totient is φ = 818995728096.

The previous prime is 1645432263283. The next prime is 1645432263359. The reversal of 1645432263326 is 6233622345461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1106544155 + ... + 1106545641.

It is an arithmetic number, because the mean of its divisors is an integer number (77479549920).

Almost surely, 2^{1645432263326} is an apocalyptic number.

1645432263326 is a deficient number, since it is larger than the sum of its proper divisors (833913334114).

1645432263326 is a wasteful number, since it uses less digits than its factorization.

1645432263326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088.

The product of its digits is 3732480, while the sum is 47.

The spelling of 1645432263326 in words is "one trillion, six hundred forty-five billion, four hundred thirty-two million, two hundred sixty-three thousand, three hundred twenty-six".