16415508893401 has 2 divisors, whose sum is σ = 16415508893402. Its totient is φ = 16415508893400.

The previous prime is 16415508893387. The next prime is 16415508893429. The reversal of 16415508893401 is 10439880551461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16414530705225 + 978188176 = 4051485^2 + 31276^2 .

It is an emirp because it is prime and its reverse (10439880551461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16415508893401 - 2¹⁷ = 16415508762329 is a prime.

It is not a weakly prime, because it can be changed into another prime (16415518893401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8207754446700 + 8207754446701.

It is an arithmetic number, because the mean of its divisors is an integer number (8207754446701).

Almost surely, 2^{16415508893401} is an apocalyptic number.

It is an amenable number.

16415508893401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16415508893401 is an equidigital number, since it uses as much as digits as its factorization.

16415508893401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 16415508893401 in words is "sixteen trillion, four hundred fifteen billion, five hundred eight million, eight hundred ninety-three thousand, four hundred one".