16064003641 has 24 divisors (see below), whose sum is σ = 18892686024. Its totient is φ = 13617676800.

The previous prime is 16064003639. The next prime is 16064003651. The reversal of 16064003641 is 14630046061.

It can be written as a sum of positive squares in 4 ways, for example, as 1856317225 + 14207686416 = 43085^2 + 119196^2 .

It is not a de Polignac number, because 16064003641 - 2¹ = 16064003639 is a prime.

It is a super-2 number, since 2×16064003641² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16064003651) 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 in 23 ways as a sum of consecutive naturals, for example, 8575681 + ... + 8577553.

It is an arithmetic number, because the mean of its divisors is an integer number (787195251).

Almost surely, 2^16064003641 is an apocalyptic number.

It is an amenable number.

16064003641 is a deficient number, since it is larger than the sum of its proper divisors (2828682383).

16064003641 is a wasteful number, since it uses less digits than its factorization.

16064003641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 16064003641 in words is "sixteen billion, sixty-four million, three thousand, six hundred forty-one".