2662561523 has 4 divisors (see below), whose sum is σ = 2802696360. Its totient is φ = 2522426688.

The previous prime is 2662561487. The next prime is 2662561529. The reversal of 2662561523 is 3251652662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2662561523 - 2¹⁸ = 2662299379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2662561529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70067390 + ... + 70067427.

It is an arithmetic number, because the mean of its divisors is an integer number (700674090).

Almost surely, 2^2662561523 is an apocalyptic number.

2662561523 is a deficient number, since it is larger than the sum of its proper divisors (140134837).

2662561523 is a wasteful number, since it uses less digits than its factorization.

2662561523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140134836.

The product of its digits is 129600, while the sum is 38.

The square root of 2662561523 is about 51600.0147577498. The cubic root of 2662561523 is about 1386.0105963318.

The spelling of 2662561523 in words is "two billion, six hundred sixty-two million, five hundred sixty-one thousand, five hundred twenty-three".