2016445400401 has 4 divisors (see below), whose sum is σ = 2016879142500. Its totient is φ = 2016011658304.

The previous prime is 2016445400323. The next prime is 2016445400429. The reversal of 2016445400401 is 1040045446102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1741869400401 + 274576000000 = 1319799^2 + 524000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2016445400401 - 2⁹ = 2016445399889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016445400441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216864076 + ... + 216873373.

It is an arithmetic number, because the mean of its divisors is an integer number (504219785625).

Almost surely, 2^{2016445400401} is an apocalyptic number.

It is an amenable number.

2016445400401 is a deficient number, since it is larger than the sum of its proper divisors (433742099).

2016445400401 is an equidigital number, since it uses as much as digits as its factorization.

2016445400401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433742098.

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 2016445400401 in words is "two trillion, sixteen billion, four hundred forty-five million, four hundred thousand, four hundred one".