16406650401401 has 8 divisors (see below), whose sum is σ = 17797669050504. Its totient is φ = 15034055840640.

The previous prime is 16406650401343. The next prime is 16406650401413. The reversal of 16406650401401 is 10410405660461.

It can be written as a sum of positive squares in 4 ways, for example, as 821715055225 + 15584935346176 = 906485^2 + 3947776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16406650401401 - 2¹⁴ = 16406650385017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16406650401301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4606020230 + ... + 4606023791.

It is an arithmetic number, because the mean of its divisors is an integer number (2224708631313).

Almost surely, 2^{16406650401401} is an apocalyptic number.

It is an amenable number.

16406650401401 is a deficient number, since it is larger than the sum of its proper divisors (1391018649103).

16406650401401 is a wasteful number, since it uses less digits than its factorization.

16406650401401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212044171.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 16406650401401 in words is "sixteen trillion, four hundred six billion, six hundred fifty million, four hundred one thousand, four hundred one".