16001403625201 has 2 divisors, whose sum is σ = 16001403625202. Its totient is φ = 16001403625200.

The previous prime is 16001403625127. The next prime is 16001403625217. The reversal of 16001403625201 is 10252630410061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13123223514801 + 2878180110400 = 3622599^2 + 1696520^2 .

It is a cyclic number.

It is not a de Polignac number, because 16001403625201 - 2¹⁹ = 16001403100913 is a prime.

It is not a weakly prime, because it can be changed into another prime (16001403625601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8000701812600 + 8000701812601.

It is an arithmetic number, because the mean of its divisors is an integer number (8000701812601).

Almost surely, 2^{16001403625201} is an apocalyptic number.

It is an amenable number.

16001403625201 is a deficient number, since it is larger than the sum of its proper divisors (1).

16001403625201 is an equidigital number, since it uses as much as digits as its factorization.

16001403625201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 16001403625201 in words is "sixteen trillion, one billion, four hundred three million, six hundred twenty-five thousand, two hundred one".