11621644612611 has 24 divisors (see below), whose sum is σ = 18034170939792. Its totient is φ = 6629102092800.

The previous prime is 11621644612507. The next prime is 11621644612639.

It is a happy number.

11621644612611 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11621644612611 - 2¹³ = 11621644604419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11621644616611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 941627650 + ... + 941639991.

It is an arithmetic number, because the mean of its divisors is an integer number (751423789158).

Almost surely, 2^{11621644612611} is an apocalyptic number.

11621644612611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11621644612611 is a deficient number, since it is larger than the sum of its proper divisors (6412526327181).

11621644612611 is a wasteful number, since it uses less digits than its factorization.

11621644612611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883267683 (or 1883267672 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

It can be divided in two parts, 1162164 and 4612611, that added together give a palindrome (5774775).

The spelling of 11621644612611 in words is "eleven trillion, six hundred twenty-one billion, six hundred forty-four million, six hundred twelve thousand, six hundred eleven".