2666342432 has 48 divisors (see below), whose sum is σ = 5685989400. Its totient is φ = 1223473152.

The previous prime is 2666342423. The next prime is 2666342443. The reversal of 2666342432 is 2342436662.

It can be written as a sum of positive squares in 4 ways, for example, as 1950458896 + 715883536 = 44164^2 + 26756^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53444 + ... + 90492.

Almost surely, 2^2666342432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666342432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2842994700).

2666342432 is an abundant number, since it is smaller than the sum of its proper divisors (3019646968).

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

2666342432 is a wasteful number, since it uses less digits than its factorization.

2666342432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37245 (or 37237 counting only the distinct ones).

The product of its digits is 248832, while the sum is 38.

The square root of 2666342432 is about 51636.6384653378. The cubic root of 2666342432 is about 1386.6663434828. Note that the first 3 decimals are identical.

The spelling of 2666342432 in words is "two billion, six hundred sixty-six million, three hundred forty-two thousand, four hundred thirty-two".