11900842940 has 24 divisors (see below), whose sum is σ = 28562023392. Its totient is φ = 4080288960.

The previous prime is 11900842937. The next prime is 11900842949. The reversal of 11900842940 is 4924800911.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11900842894 and 11900842903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11900842949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42502871 + ... + 42503150.

It is an arithmetic number, because the mean of its divisors is an integer number (1190084308).

Almost surely, 2^11900842940 is an apocalyptic number.

11900842940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11900842940 is an abundant number, since it is smaller than the sum of its proper divisors (16661180452).

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

11900842940 is a wasteful number, since it uses less digits than its factorization.

11900842940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85006037 (or 85006035 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 11900842940 in words is "eleven billion, nine hundred million, eight hundred forty-two thousand, nine hundred forty".