11552412163661 has 2 divisors, whose sum is σ = 11552412163662. Its totient is φ = 11552412163660.

The previous prime is 11552412163553. The next prime is 11552412163673. The reversal of 11552412163661 is 16636121425511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11079644532100 + 472767631561 = 3328610^2 + 687581^2 .

It is a cyclic number.

It is not a de Polignac number, because 11552412163661 - 2²² = 11552407969357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11552412163961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776206081830 + 5776206081831.

It is an arithmetic number, because the mean of its divisors is an integer number (5776206081831).

Almost surely, 2^{11552412163661} is an apocalyptic number.

It is an amenable number.

11552412163661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11552412163661 is an equidigital number, since it uses as much as digits as its factorization.

11552412163661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 44.

The spelling of 11552412163661 in words is "eleven trillion, five hundred fifty-two billion, four hundred twelve million, one hundred sixty-three thousand, six hundred sixty-one".