11621426015 has 32 divisors (see below), whose sum is σ = 15535183104. Its totient is φ = 8306012160.

The previous prime is 11621425997. The next prime is 11621426053. The reversal of 11621426015 is 51062412611.

It is not a de Polignac number, because 11621426015 - 2⁸ = 11621425759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83882 + ... + 174008.

It is an arithmetic number, because the mean of its divisors is an integer number (485474472).

Almost surely, 2^11621426015 is an apocalyptic number.

11621426015 is a deficient number, since it is larger than the sum of its proper divisors (3913757089).

11621426015 is a wasteful number, since it uses less digits than its factorization.

11621426015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90227.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 11621426015 its reverse (51062412611), we get a palindrome (62683838626).

The spelling of 11621426015 in words is "eleven billion, six hundred twenty-one million, four hundred twenty-six thousand, fifteen".