11552220658461 has 32 divisors (see below), whose sum is σ = 17778723418368. Its totient is φ = 6535524326400.

The previous prime is 11552220658423. The next prime is 11552220658477. The reversal of 11552220658461 is 16485602225511.

It is not a de Polignac number, because 11552220658461 - 2⁶ = 11552220658397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11552220658461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552220656461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37935141 + ... + 38238453.

It is an arithmetic number, because the mean of its divisors is an integer number (555585106824).

Almost surely, 2^{11552220658461} is an apocalyptic number.

It is an amenable number.

11552220658461 is a deficient number, since it is larger than the sum of its proper divisors (6226502759907).

11552220658461 is a wasteful number, since it uses less digits than its factorization.

11552220658461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321381.

The product of its (nonzero) digits is 1152000, while the sum is 48.

The spelling of 11552220658461 in words is "eleven trillion, five hundred fifty-two billion, two hundred twenty million, six hundred fifty-eight thousand, four hundred sixty-one".