38720801556601 has 2 divisors, whose sum is σ = 38720801556602. Its totient is φ = 38720801556600.

The previous prime is 38720801556559. The next prime is 38720801556641. The reversal of 38720801556601 is 10665510802783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28473152128576 + 10247649428025 = 5336024^2 + 3201195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38720801556601 is a prime.

It is not a weakly prime, because it can be changed into another prime (38720801556641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19360400778300 + 19360400778301.

It is an arithmetic number, because the mean of its divisors is an integer number (19360400778301).

Almost surely, 2^{38720801556601} is an apocalyptic number.

It is an amenable number.

38720801556601 is a deficient number, since it is larger than the sum of its proper divisors (1).

38720801556601 is an equidigital number, since it uses as much as digits as its factorization.

38720801556601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 38720801556601 in words is "thirty-eight trillion, seven hundred twenty billion, eight hundred one million, five hundred fifty-six thousand, six hundred one".