1626244043661 has 12 divisors (see below), whose sum is σ = 2487196772892. Its totient is φ = 1020388419456.

The previous prime is 1626244043659. The next prime is 1626244043663. The reversal of 1626244043661 is 1663404426261.

1626244043661 is a `hidden beast` number, since 1 + 62 + 62 + 4 + 40 + 436 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (1626244043659) and next prime (1626244043663).

It can be written as a sum of positive squares in 2 ways, for example, as 836511452100 + 789732591561 = 914610^2 + 888669^2 .

It is not a de Polignac number, because 1626244043661 - 2¹ = 1626244043659 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1626244043663) 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 11 ways as a sum of consecutive naturals, for example, 5314522866 + ... + 5314523171.

It is an arithmetic number, because the mean of its divisors is an integer number (207266397741).

Almost surely, 2^{1626244043661} is an apocalyptic number.

It is an amenable number.

1626244043661 is a deficient number, since it is larger than the sum of its proper divisors (860952729231).

1626244043661 is a wasteful number, since it uses less digits than its factorization.

1626244043661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629046060 (or 10629046057 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The spelling of 1626244043661 in words is "one trillion, six hundred twenty-six billion, two hundred forty-four million, forty-three thousand, six hundred sixty-one".