11500154621 has 2 divisors, whose sum is σ = 11500154622. Its totient is φ = 11500154620.

The previous prime is 11500154587. The next prime is 11500154647. The reversal of 11500154621 is 12645100511.

It is an a-pointer prime, because the next prime (11500154647) can be obtained adding 11500154621 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11388091225 + 112063396 = 106715^2 + 10586^2 .

It is an emirp because it is prime and its reverse (12645100511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11500154621 - 2³⁰ = 10426412797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11500154321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750077310 + 5750077311.

It is an arithmetic number, because the mean of its divisors is an integer number (5750077311).

Almost surely, 2^11500154621 is an apocalyptic number.

It is an amenable number.

11500154621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11500154621 is an equidigital number, since it uses as much as digits as its factorization.

11500154621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 11500154621 in words is "eleven billion, five hundred million, one hundred fifty-four thousand, six hundred twenty-one".