11961051628 has 12 divisors (see below), whose sum is σ = 20936109600. Its totient is φ = 5979306032.

The previous prime is 11961051617. The next prime is 11961051677. The reversal of 11961051628 is 82615016911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282703 + ... + 322246.

It is an arithmetic number, because the mean of its divisors is an integer number (1744675800).

Almost surely, 2^11961051628 is an apocalyptic number.

It is an amenable number.

11961051628 is a deficient number, since it is larger than the sum of its proper divisors (8975057972).

11961051628 is a wasteful number, since it uses less digits than its factorization.

11961051628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609896 (or 609894 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The spelling of 11961051628 in words is "eleven billion, nine hundred sixty-one million, fifty-one thousand, six hundred twenty-eight".