26630718505 has 16 divisors (see below), whose sum is σ = 32705925120. Its totient is φ = 20805378048.

The previous prime is 26630718493. The next prime is 26630718509. The reversal of 26630718505 is 50581703662.

It is a cyclic number.

It is not a de Polignac number, because 26630718505 - 2¹¹ = 26630716457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (26630718509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306136 + ... + 2317654.

It is an arithmetic number, because the mean of its divisors is an integer number (2044120320).

Almost surely, 2^26630718505 is an apocalyptic number.

It is an amenable number.

26630718505 is a deficient number, since it is larger than the sum of its proper divisors (6075206615).

26630718505 is a wasteful number, since it uses less digits than its factorization.

26630718505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22320.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 26630718505 in words is "twenty-six billion, six hundred thirty million, seven hundred eighteen thousand, five hundred five".