2661244226526 has 32 divisors (see below), whose sum is σ = 5506114775040. Its totient is φ = 856478046816.

The previous prime is 2661244226521. The next prime is 2661244226567. The reversal of 2661244226526 is 6256224421662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661244226521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16394775 + ... + 16556301.

It is an arithmetic number, because the mean of its divisors is an integer number (172066086720).

Almost surely, 2^{2661244226526} is an apocalyptic number.

2661244226526 is an abundant number, since it is smaller than the sum of its proper divisors (2844870548514).

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

2661244226526 is a wasteful number, since it uses less digits than its factorization.

2661244226526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256248.

The product of its digits is 3317760, while the sum is 48.

The spelling of 2661244226526 in words is "two trillion, six hundred sixty-one billion, two hundred forty-four million, two hundred twenty-six thousand, five hundred twenty-six".