16163400445 has 8 divisors (see below), whose sum is σ = 19399079736. Its totient is φ = 12928720896.

The previous prime is 16163400433. The next prime is 16163400467. The reversal of 16163400445 is 54400436161.

It can be written as a sum of positive squares in 4 ways, for example, as 1583562436 + 14579838009 = 39794^2 + 120747^2 .

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 16163400445 - 2⁵ = 16163400413 is a prime.

It is a super-2 number, since 2×16163400445² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16163400445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213892 + ... + 279421.

It is an arithmetic number, because the mean of its divisors is an integer number (2424884967).

Almost surely, 2^16163400445 is an apocalyptic number.

It is an amenable number.

16163400445 is a deficient number, since it is larger than the sum of its proper divisors (3235679291).

16163400445 is an equidigital number, since it uses as much as digits as its factorization.

16163400445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499871.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 16163400445 in words is "sixteen billion, one hundred sixty-three million, four hundred thousand, four hundred forty-five".