20617147607 has 32 divisors (see below), whose sum is σ = 24601708032. Its totient is φ = 16911949824.

The previous prime is 20617147597. The next prime is 20617147609. The reversal of 20617147607 is 70674171602.

It is not a de Polignac number, because 20617147607 - 2³² = 16322180311 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 (20617147609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3889583 + ... + 3894879.

It is an arithmetic number, because the mean of its divisors is an integer number (768803376).

Almost surely, 2^20617147607 is an apocalyptic number.

20617147607 is a deficient number, since it is larger than the sum of its proper divisors (3984560425).

20617147607 is a wasteful number, since it uses less digits than its factorization.

20617147607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 20617147607 in words is "twenty billion, six hundred seventeen million, one hundred forty-seven thousand, six hundred seven".