11864973940 has 24 divisors (see below), whose sum is σ = 24987853800. Its totient is φ = 4732387968.

The previous prime is 11864973917. The next prime is 11864973941. The reversal of 11864973940 is 4937946811.

It can be written as a sum of positive squares in 4 ways, for example, as 2346239844 + 9518734096 = 48438^2 + 97564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11864973941) 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, 842947 + ... + 856906.

It is an arithmetic number, because the mean of its divisors is an integer number (1041160575).

Almost surely, 2^11864973940 is an apocalyptic number.

11864973940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11864973940 is an abundant number, since it is smaller than the sum of its proper divisors (13122879860).

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

11864973940 is a wasteful number, since it uses less digits than its factorization.

11864973940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700211 (or 1700209 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 11864973940 in words is "eleven billion, eight hundred sixty-four million, nine hundred seventy-three thousand, nine hundred forty".