16697325020401 has 2 divisors, whose sum is σ = 16697325020402. Its totient is φ = 16697325020400.

The previous prime is 16697325020371. The next prime is 16697325020417. The reversal of 16697325020401 is 10402052379661.

It is a happy number.

16697325020401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10468686736225 + 6228638284176 = 3235535^2 + 2495724^2 .

It is a cyclic number.

It is not a de Polignac number, because 16697325020401 - 2⁷ = 16697325020273 is a prime.

It is not a weakly prime, because it can be changed into another prime (16697325020461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8348662510200 + 8348662510201.

It is an arithmetic number, because the mean of its divisors is an integer number (8348662510201).

Almost surely, 2^{16697325020401} is an apocalyptic number.

It is an amenable number.

16697325020401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16697325020401 is an equidigital number, since it uses as much as digits as its factorization.

16697325020401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 16697325020401 in words is "sixteen trillion, six hundred ninety-seven billion, three hundred twenty-five million, twenty thousand, four hundred one".