11726631388513 has 16 divisors (see below), whose sum is σ = 12244721397120. Its totient is φ = 11209229501184.

The previous prime is 11726631388499. The next prime is 11726631388519. The reversal of 11726631388513 is 31588313662711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11726631388513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11726631388519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415396683 + ... + 415424911.

It is an arithmetic number, because the mean of its divisors is an integer number (765295087320).

Almost surely, 2^{11726631388513} is an apocalyptic number.

It is an amenable number.

11726631388513 is a deficient number, since it is larger than the sum of its proper divisors (518090008607).

11726631388513 is a wasteful number, since it uses less digits than its factorization.

11726631388513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39768.

The product of its digits is 4354560, while the sum is 55.

The spelling of 11726631388513 in words is "eleven trillion, seven hundred twenty-six billion, six hundred thirty-one million, three hundred eighty-eight thousand, five hundred thirteen".