11901968240 has 40 divisors (see below), whose sum is σ = 28875214368. Its totient is φ = 4553795840.

The previous prime is 11901968233. The next prime is 11901968261. The reversal of 11901968240 is 4286910911.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3232391 + ... + 3236070.

Almost surely, 2^11901968240 is an apocalyptic number.

11901968240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11901968240 is an abundant number, since it is smaller than the sum of its proper divisors (16973246128).

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

11901968240 is a wasteful number, since it uses less digits than its factorization.

11901968240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468497 (or 6468491 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 11901968240 in words is "eleven billion, nine hundred one million, nine hundred sixty-eight thousand, two hundred forty".