11621661132576 has 48 divisors (see below), whose sum is σ = 33280211428128. Its totient is φ = 3521715494400.

The previous prime is 11621661132517. The next prime is 11621661132577. The reversal of 11621661132576 is 67523116612611.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (11621661132577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5502679405 + ... + 5502681516.

It is an arithmetic number, because the mean of its divisors is an integer number (693337738086).

Almost surely, 2^{11621661132576} is an apocalyptic number.

11621661132576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11621661132576 is an abundant number, since it is smaller than the sum of its proper divisors (21658550295552).

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

11621661132576 is a wasteful number, since it uses less digits than its factorization.

11621661132576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005360945 (or 11005360937 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The spelling of 11621661132576 in words is "eleven trillion, six hundred twenty-one billion, six hundred sixty-one million, one hundred thirty-two thousand, five hundred seventy-six".