2661372479 has 2 divisors, whose sum is σ = 2661372480. Its totient is φ = 2661372478.

The previous prime is 2661372391. The next prime is 2661372487. The reversal of 2661372479 is 9742731662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661372479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661342479) 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 as a sum of consecutive naturals, namely, 1330686239 + 1330686240.

It is an arithmetic number, because the mean of its divisors is an integer number (1330686240).

Almost surely, 2^2661372479 is an apocalyptic number.

2661372479 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661372479 is an equidigital number, since it uses as much as digits as its factorization.

2661372479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 2661372479 is about 51588.4917302299. The cubic root of 2661372479 is about 1385.8042445468.

The spelling of 2661372479 in words is "two billion, six hundred sixty-one million, three hundred seventy-two thousand, four hundred seventy-nine".