2661942763 has 16 divisors (see below), whose sum is σ = 2780993824. Its totient is φ = 2545551360.

The previous prime is 2661942761. The next prime is 2661942779. The reversal of 2661942763 is 3672491662.

It is a cyclic number.

It is not a de Polignac number, because 2661942763 - 2¹ = 2661942761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661942761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1429453 + ... + 1431313.

It is an arithmetic number, because the mean of its divisors is an integer number (173812114).

Almost surely, 2^2661942763 is an apocalyptic number.

2661942763 is a deficient number, since it is larger than the sum of its proper divisors (119051061).

2661942763 is a wasteful number, since it uses less digits than its factorization.

2661942763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542.

The product of its digits is 653184, while the sum is 46.

The square root of 2661942763 is about 51594.0186746487. The cubic root of 2661942763 is about 1385.9032217414.

The spelling of 2661942763 in words is "two billion, six hundred sixty-one million, nine hundred forty-two thousand, seven hundred sixty-three".