2665432494 has 40 divisors (see below), whose sum is σ = 5997210120. Its totient is φ = 888464376.

The previous prime is 2665432493. The next prime is 2665432531. The reversal of 2665432494 is 4942345662.

2665432494 is a `hidden beast` number, since 2 + 66 + 543 + 2 + 49 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665432493) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5512 + ... + 73220.

It is an arithmetic number, because the mean of its divisors is an integer number (149930253).

Almost surely, 2^2665432494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665432494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2998605060).

2665432494 is an abundant number, since it is smaller than the sum of its proper divisors (3331777626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2665432494 is an frugal number, since it uses more digits than its factorization.

2665432494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67738 (or 67714 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The square root of 2665432494 is about 51627.8267410124. The cubic root of 2665432494 is about 1386.5085838059.

The spelling of 2665432494 in words is "two billion, six hundred sixty-five million, four hundred thirty-two thousand, four hundred ninety-four".