11961849600 has 162 divisors, whose sum is σ = 42766517976. Its totient is φ = 3189811200.

The previous prime is 11961849541. The next prime is 11961849631. The reversal of 11961849600 is 694816911.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46236 + ... + 161435.

Almost surely, 2^11961849600 is an apocalyptic number.

11961849600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11961849600 is an abundant number, since it is smaller than the sum of its proper divisors (30804668376).

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

11961849600 is a wasteful number, since it uses less digits than its factorization.

11961849600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207703 (or 207681 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 11961849600 in words is "eleven billion, nine hundred sixty-one million, eight hundred forty-nine thousand, six hundred".