2074403615661 has 40 divisors (see below), whose sum is σ = 3337473807360. Its totient is φ = 1276439754528.

The previous prime is 2074403615621. The next prime is 2074403615663. The reversal of 2074403615661 is 1665163044702.

2074403615661 is a `hidden beast` number, since 20 + 7 + 4 + 4 + 0 + 3 + 61 + 566 + 1 = 666.

It is not a de Polignac number, because 2074403615661 - 2⁹ = 2074403615149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2074403615663) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12281500 + ... + 12449258.

It is an arithmetic number, because the mean of its divisors is an integer number (83436845184).

Almost surely, 2^{2074403615661} is an apocalyptic number.

It is an amenable number.

2074403615661 is a deficient number, since it is larger than the sum of its proper divisors (1263070191699).

2074403615661 is a wasteful number, since it uses less digits than its factorization.

2074403615661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179527 (or 179518 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 2074403615661 in words is "two trillion, seventy-four billion, four hundred three million, six hundred fifteen thousand, six hundred sixty-one".