11661526634 has 8 divisors (see below), whose sum is σ = 17738660448. Its totient is φ = 5748639820.

The previous prime is 11661526633. The next prime is 11661526637. The reversal of 11661526634 is 43662516611.

11661526634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11661526591 and 11661526600.

It is not an unprimeable number, because it can be changed into a prime (11661526633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41061572 + ... + 41061855.

It is an arithmetic number, because the mean of its divisors is an integer number (2217332556).

Almost surely, 2^11661526634 is an apocalyptic number.

11661526634 is a deficient number, since it is larger than the sum of its proper divisors (6077133814).

11661526634 is an equidigital number, since it uses as much as digits as its factorization.

11661526634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82123500.

The product of its digits is 155520, while the sum is 41.

The spelling of 11661526634 in words is "eleven billion, six hundred sixty-one million, five hundred twenty-six thousand, six hundred thirty-four".