2751665742 has 80 divisors (see below), whose sum is σ = 7100767872. Its totient is φ = 780146640.

The previous prime is 2751665729. The next prime is 2751665753. The reversal of 2751665742 is 2475661572.

2751665742 is a `hidden beast` number, since 2 + 7 + 516 + 65 + 74 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 139293 + ... + 157815.

Almost surely, 2^2751665742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2751665742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3550383936).

2751665742 is an abundant number, since it is smaller than the sum of its proper divisors (4349102130).

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

2751665742 is a wasteful number, since it uses less digits than its factorization.

2751665742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18675 (or 18666 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 2751665742 is about 52456.3222309761. The cubic root of 2751665742 is about 1401.3024854801.

The spelling of 2751665742 in words is "two billion, seven hundred fifty-one million, six hundred sixty-five thousand, seven hundred forty-two".