11961049672 has 128 divisors (see below), whose sum is σ = 27301478400. Its totient is φ = 4838227200.

The previous prime is 11961049637. The next prime is 11961049729. The reversal of 11961049672 is 27694016911.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13014829 + ... + 13015747.

It is an arithmetic number, because the mean of its divisors is an integer number (213292800).

Almost surely, 2^11961049672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11961049672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13650739200).

11961049672 is an abundant number, since it is smaller than the sum of its proper divisors (15340428728).

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

11961049672 is a wasteful number, since it uses less digits than its factorization.

11961049672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 11961049672 in words is "eleven billion, nine hundred sixty-one million, forty-nine thousand, six hundred seventy-two".