20147316901 has 2 divisors, whose sum is σ = 20147316902. Its totient is φ = 20147316900.

The previous prime is 20147316841. The next prime is 20147316929. The reversal of 20147316901 is 10961374102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18292292001 + 1855024900 = 135249^2 + 43070^2 .

It is a cyclic number.

It is not a de Polignac number, because 20147316901 - 2¹⁷ = 20147185829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20147316961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073658450 + 10073658451.

It is an arithmetic number, because the mean of its divisors is an integer number (10073658451).

Almost surely, 2^20147316901 is an apocalyptic number.

It is an amenable number.

20147316901 is a deficient number, since it is larger than the sum of its proper divisors (1).

20147316901 is an equidigital number, since it uses as much as digits as its factorization.

20147316901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 20147316901 in words is "twenty billion, one hundred forty-seven million, three hundred sixteen thousand, nine hundred one".