11961177952 has 12 divisors (see below), whose sum is σ = 23548569156. Its totient is φ = 5980588960.

The previous prime is 11961177871. The next prime is 11961177953. The reversal of 11961177952 is 25977116911.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11961177896 and 11961177905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11961177953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186893374 + ... + 186893437.

It is an arithmetic number, because the mean of its divisors is an integer number (1962380763).

Almost surely, 2^11961177952 is an apocalyptic number.

It is an amenable number.

11961177952 is a deficient number, since it is larger than the sum of its proper divisors (11587391204).

11961177952 is an equidigital number, since it uses as much as digits as its factorization.

11961177952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373786821 (or 373786813 counting only the distinct ones).

The product of its digits is 238140, while the sum is 49.

The spelling of 11961177952 in words is "eleven billion, nine hundred sixty-one million, one hundred seventy-seven thousand, nine hundred fifty-two".