11621556000653 has 4 divisors (see below), whose sum is σ = 11622475658460. Its totient is φ = 11620636342848.

The previous prime is 11621556000623. The next prime is 11621556000709. The reversal of 11621556000653 is 35600065512611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4605822469924 + 7015733530729 = 2146118^2 + 2648723^2 .

It is a cyclic number.

It is not a de Polignac number, because 11621556000653 - 2¹⁶ = 11621555935117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11621556000653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621556000623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459809948 + ... + 459835221.

It is an arithmetic number, because the mean of its divisors is an integer number (2905618914615).

Almost surely, 2^{11621556000653} is an apocalyptic number.

It is an amenable number.

11621556000653 is a deficient number, since it is larger than the sum of its proper divisors (919657807).

11621556000653 is an equidigital number, since it uses as much as digits as its factorization.

11621556000653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919657806.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 11621556000653 in words is "eleven trillion, six hundred twenty-one billion, five hundred fifty-six million, six hundred fifty-three", and thus it is an aban number.