4074640572861 has 12 divisors (see below), whose sum is σ = 5885865750492. Its totient is φ = 2716300673856.

The previous prime is 4074640572859. The next prime is 4074640572907. The reversal of 4074640572861 is 1682750464704.

4074640572861 is a `hidden beast` number, since 4 + 0 + 7 + 4 + 6 + 4 + 0 + 572 + 8 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1949357685636 + 2125282887225 = 1396194^2 + 1457835^2 .

It is not a de Polignac number, because 4074640572861 - 2¹ = 4074640572859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4074640572798 and 4074640572807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4074640572161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10326816 + ... + 10714121.

It is an arithmetic number, because the mean of its divisors is an integer number (490488812541).

Almost surely, 2^{4074640572861} is an apocalyptic number.

It is an amenable number.

4074640572861 is a deficient number, since it is larger than the sum of its proper divisors (1811225177631).

4074640572861 is a wasteful number, since it uses less digits than its factorization.

4074640572861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21062460 (or 21062457 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 4074640572861 in words is "four trillion, seventy-four billion, six hundred forty million, five hundred seventy-two thousand, eight hundred sixty-one".