16251074645 has 24 divisors (see below), whose sum is σ = 21204668232. Its totient is φ = 11950848000.

The previous prime is 16251074641. The next prime is 16251074647. The reversal of 16251074645 is 54647015261.

16251074645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 9734387569 + 6516687076 = 98663^2 + 80726^2 .

It is not a de Polignac number, because 16251074645 - 2² = 16251074641 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16251074641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163745 + ... + 243545.

It is an arithmetic number, because the mean of its divisors is an integer number (883527843).

Almost surely, 2^16251074645 is an apocalyptic number.

It is an amenable number.

16251074645 is a deficient number, since it is larger than the sum of its proper divisors (4953593587).

16251074645 is a wasteful number, since it uses less digits than its factorization.

16251074645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80073 (or 80060 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 16251074645 in words is "sixteen billion, two hundred fifty-one million, seventy-four thousand, six hundred forty-five".