11491949600 has 36 divisors (see below), whose sum is σ = 28054723914. Its totient is φ = 4596779520.

The previous prime is 11491949593. The next prime is 11491949639. The reversal of 11491949600 is 694919411.

It can be written as a sum of positive squares in 3 ways, for example, as 5934545296 + 5557404304 = 77036^2 + 74548^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7181669 + ... + 7183268.

Almost surely, 2^11491949600 is an apocalyptic number.

11491949600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11491949600 is an abundant number, since it is smaller than the sum of its proper divisors (16562774314).

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

11491949600 is a wasteful number, since it uses less digits than its factorization.

11491949600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14364957 (or 14364944 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 11491949600 in words is "eleven billion, four hundred ninety-one million, nine hundred forty-nine thousand, six hundred".