645611422226 has 16 divisors (see below), whose sum is σ = 978766270944. Its totient is φ = 319358484864.

The previous prime is 645611422207. The next prime is 645611422277. The reversal of 645611422226 is 622224116546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99680 + ... + 1140683.

It is an arithmetic number, because the mean of its divisors is an integer number (61172891934).

Almost surely, 2^645611422226 is an apocalyptic number.

645611422226 is a deficient number, since it is larger than the sum of its proper divisors (333154848718).

645611422226 is a wasteful number, since it uses less digits than its factorization.

645611422226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243145.

The product of its digits is 276480, while the sum is 41.

The spelling of 645611422226 in words is "six hundred forty-five billion, six hundred eleven million, four hundred twenty-two thousand, two hundred twenty-six".