20745560607 has 16 divisors (see below), whose sum is σ = 28017968640. Its totient is φ = 13651852032.

The previous prime is 20745560597. The next prime is 20745560621. The reversal of 20745560607 is 70606554702.

It is not a de Polignac number, because 20745560607 - 2¹² = 20745556511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20745560107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212768 + ... + 1229754.

It is an arithmetic number, because the mean of its divisors is an integer number (1751123040).

Almost surely, 2^20745560607 is an apocalyptic number.

20745560607 is a deficient number, since it is larger than the sum of its proper divisors (7272408033).

20745560607 is a wasteful number, since it uses less digits than its factorization.

20745560607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222.

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 20745560607 in words is "twenty billion, seven hundred forty-five million, five hundred sixty thousand, six hundred seven".