2645642520326 has 16 divisors (see below), whose sum is σ = 4317789303744. Its totient is φ = 1208477470464.

The previous prime is 2645642520307. The next prime is 2645642520373. The reversal of 2645642520326 is 6230252465462.

It is a Curzon number.

It is a congruent number.

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, 524510270 + ... + 524515313.

It is an arithmetic number, because the mean of its divisors is an integer number (269861831484).

Almost surely, 2^{2645642520326} is an apocalyptic number.

2645642520326 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2645642520326 is a deficient number, since it is larger than the sum of its proper divisors (1672146783418).

2645642520326 is a wasteful number, since it uses less digits than its factorization.

2645642520326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049025695.

The product of its (nonzero) digits is 4147200, while the sum is 47.

Adding to 2645642520326 its reverse (6230252465462), we get a palindrome (8875894985788).

The spelling of 2645642520326 in words is "two trillion, six hundred forty-five billion, six hundred forty-two million, five hundred twenty thousand, three hundred twenty-six".