11621071655136 has 72 divisors (see below), whose sum is σ = 33815967265080. Its totient is φ = 3783604720896.

The previous prime is 11621071655057. The next prime is 11621071655177. The reversal of 11621071655136 is 63155617012611.

11621071655136 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 1 + 0 + 71 + 65 + 513 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 11621071655091 and 11621071655100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469184631 + ... + 469209398.

It is an arithmetic number, because the mean of its divisors is an integer number (469666212015).

Almost surely, 2^{11621071655136} is an apocalyptic number.

11621071655136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11621071655136 is an abundant number, since it is smaller than the sum of its proper divisors (22194895609944).

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

11621071655136 is a wasteful number, since it uses less digits than its factorization.

11621071655136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938394088 (or 938394077 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

Adding to 11621071655136 its reverse (63155617012611), we get a palindrome (74776688667747).

The spelling of 11621071655136 in words is "eleven trillion, six hundred twenty-one billion, seventy-one million, six hundred fifty-five thousand, one hundred thirty-six".