20064600645 has 32 divisors (see below), whose sum is σ = 32418144000. Its totient is φ = 10596317184.

The previous prime is 20064600631. The next prime is 20064600653. The reversal of 20064600645 is 54600646002.

It is not a de Polignac number, because 20064600645 - 2¹¹ = 20064598597 is a prime.

It is a super-3 number, since 3×20064600645³ (a number of 32 digits) contains 333 as substring.

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 31 ways as a sum of consecutive naturals, for example, 3713656 + ... + 3719054.

It is an arithmetic number, because the mean of its divisors is an integer number (1013067000).

Almost surely, 2^20064600645 is an apocalyptic number.

It is an amenable number.

20064600645 is a deficient number, since it is larger than the sum of its proper divisors (12353543355).

20064600645 is a wasteful number, since it uses less digits than its factorization.

20064600645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7789.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 20064600645 in words is "twenty billion, sixty-four million, six hundred thousand, six hundred forty-five".