20604595607 has 4 divisors (see below), whose sum is σ = 20615669256. Its totient is φ = 20593521960.

The previous prime is 20604595579. The next prime is 20604595637. The reversal of 20604595607 is 70659540602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20604595607 - 2¹⁰ = 20604594583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604595637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5534033 + ... + 5537754.

It is an arithmetic number, because the mean of its divisors is an integer number (5153917314).

Almost surely, 2^20604595607 is an apocalyptic number.

20604595607 is a deficient number, since it is larger than the sum of its proper divisors (11073649).

20604595607 is a wasteful number, since it uses less digits than its factorization.

20604595607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073648.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 20604595607 in words is "twenty billion, six hundred four million, five hundred ninety-five thousand, six hundred seven".