11141661537 has 24 divisors (see below), whose sum is σ = 17004484224. Its totient is φ = 7287619248.

The previous prime is 11141661533. The next prime is 11141661577. The reversal of 11141661537 is 73516614111.

It is a happy number.

11141661537 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 1 + 6 + 615 + 37 = 666.

It is not a de Polignac number, because 11141661537 - 2² = 11141661533 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11141661533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419673 + ... + 445430.

It is an arithmetic number, because the mean of its divisors is an integer number (708520176).

Almost surely, 2^11141661537 is an apocalyptic number.

It is an amenable number.

11141661537 is a deficient number, since it is larger than the sum of its proper divisors (5862822687).

11141661537 is an frugal number, since it uses more digits than its factorization.

11141661537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865171 (or 865159 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The spelling of 11141661537 in words is "eleven billion, one hundred forty-one million, six hundred sixty-one thousand, five hundred thirty-seven".