20079321601 has 2 divisors, whose sum is σ = 20079321602. Its totient is φ = 20079321600.

The previous prime is 20079321569. The next prime is 20079321611. The reversal of 20079321601 is 10612397002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19577606400 + 501715201 = 139920^2 + 22399^2 .

It is a cyclic number.

It is not a de Polignac number, because 20079321601 - 2⁵ = 20079321569 is a prime.

It is not a weakly prime, because it can be changed into another prime (20079321611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10039660800 + 10039660801.

It is an arithmetic number, because the mean of its divisors is an integer number (10039660801).

Almost surely, 2^20079321601 is an apocalyptic number.

It is an amenable number.

20079321601 is a deficient number, since it is larger than the sum of its proper divisors (1).

20079321601 is an equidigital number, since it uses as much as digits as its factorization.

20079321601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 20079321601 in words is "twenty billion, seventy-nine million, three hundred twenty-one thousand, six hundred one".