11661032131530 has 16 divisors (see below), whose sum is σ = 27986477115744. Its totient is φ = 3109608568400.

The previous prime is 11661032131501. The next prime is 11661032131583. The reversal of 11661032131530 is 3513123016611.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11661032131491 and 11661032131500.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 194350535496 + ... + 194350535555.

It is an arithmetic number, because the mean of its divisors is an integer number (1749154819734).

Almost surely, 2^{11661032131530} is an apocalyptic number.

11661032131530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11661032131530 is an abundant number, since it is smaller than the sum of its proper divisors (16325444984214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661032131530 is a wasteful number, since it uses less digits than its factorization.

11661032131530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388701071061.

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 11661032131530 in words is "eleven trillion, six hundred sixty-one billion, thirty-two million, one hundred thirty-one thousand, five hundred thirty".