20320779601 has 8 divisors (see below), whose sum is σ = 20470665600. Its totient is φ = 20170946640.

The previous prime is 20320779599. The next prime is 20320779649. The reversal of 20320779601 is 10697702302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20320779601 - 2¹ = 20320779599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320779301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091511 + ... + 1109971.

It is an arithmetic number, because the mean of its divisors is an integer number (2558833200).

Almost surely, 2^20320779601 is an apocalyptic number.

It is an amenable number.

20320779601 is a deficient number, since it is larger than the sum of its proper divisors (149885999).

20320779601 is a wasteful number, since it uses less digits than its factorization.

20320779601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26519.

The product of its (nonzero) digits is 31752, while the sum is 37.

The spelling of 20320779601 in words is "twenty billion, three hundred twenty million, seven hundred seventy-nine thousand, six hundred one".