11785342840 has 16 divisors (see below), whose sum is σ = 26517021480. Its totient is φ = 4714137120.

The previous prime is 11785342831. The next prime is 11785342841. The reversal of 11785342840 is 4824358711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11785342841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147316746 + ... + 147316825.

Almost surely, 2^11785342840 is an apocalyptic number.

11785342840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11785342840 is an abundant number, since it is smaller than the sum of its proper divisors (14731678640).

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

11785342840 is a wasteful number, since it uses less digits than its factorization.

11785342840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294633582 (or 294633578 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 11785342840 in words is "eleven billion, seven hundred eighty-five million, three hundred forty-two thousand, eight hundred forty".