11500150055661 has 80 divisors (see below), whose sum is σ = 17545828608000. Its totient is φ = 7505015357952.

The previous prime is 11500150055591. The next prime is 11500150055677. The reversal of 11500150055661 is 16655005100511.

It is a happy number.

11500150055661 is a `hidden beast` number, since 1 + 1 + 50 + 0 + 1 + 50 + 0 + 556 + 6 + 1 = 666.

It is not a de Polignac number, because 11500150055661 - 2¹⁴ = 11500150039277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11500150055861) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 690732865 + ... + 690749513.

It is an arithmetic number, because the mean of its divisors is an integer number (219322857600).

Almost surely, 2^{11500150055661} is an apocalyptic number.

It is an amenable number.

11500150055661 is a deficient number, since it is larger than the sum of its proper divisors (6045678552339).

11500150055661 is a wasteful number, since it uses less digits than its factorization.

11500150055661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17680 (or 17671 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 11500150055661 in words is "eleven trillion, five hundred billion, one hundred fifty million, fifty-five thousand, six hundred sixty-one".