11785997700 has 54 divisors (see below), whose sum is σ = 36942557834. Its totient is φ = 3142932480.

The previous prime is 11785997689. The next prime is 11785997767. The reversal of 11785997700 is 779958711.

It can be written as a sum of positive squares in 3 ways, for example, as 1032722496 + 10753275204 = 32136^2 + 103698^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6546877 + ... + 6548676.

Almost surely, 2^11785997700 is an apocalyptic number.

11785997700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11785997700 is an abundant number, since it is smaller than the sum of its proper divisors (25156560134).

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

11785997700 is a wasteful number, since it uses less digits than its factorization.

11785997700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13095573 (or 13095563 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 54.

The spelling of 11785997700 in words is "eleven billion, seven hundred eighty-five million, nine hundred ninety-seven thousand, seven hundred".