11616550402621 has 4 divisors (see below), whose sum is σ = 11731565753244. Its totient is φ = 11501535052000.

The previous prime is 11616550402511. The next prime is 11616550402643. The reversal of 11616550402621 is 12620405561611.

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 9187506588100 + 2429043814521 = 3031090^2 + 1558539^2 .

It is a cyclic number.

It is not a de Polignac number, because 11616550402621 - 2¹⁷ = 11616550271549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11616550403621) 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, 57507675160 + ... + 57507675361.

It is an arithmetic number, because the mean of its divisors is an integer number (2932891438311).

Almost surely, 2^{11616550402621} is an apocalyptic number.

It is an amenable number.

11616550402621 is a deficient number, since it is larger than the sum of its proper divisors (115015350623).

11616550402621 is a wasteful number, since it uses less digits than its factorization.

11616550402621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115015350622.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 11616550402621 in words is "eleven trillion, six hundred sixteen billion, five hundred fifty million, four hundred two thousand, six hundred twenty-one".