11864743280 has 40 divisors (see below), whose sum is σ = 29707494432. Its totient is φ = 4380827904.

The previous prime is 11864743271. The next prime is 11864743283. The reversal of 11864743280 is 8234746811.

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

It is a super-3 number, since 3×11864743280³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11864743283) 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, 5703164 + ... + 5705243.

Almost surely, 2^11864743280 is an apocalyptic number.

11864743280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11864743280 is an abundant number, since it is smaller than the sum of its proper divisors (17842751152).

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

11864743280 is a wasteful number, since it uses less digits than its factorization.

11864743280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11408433 (or 11408427 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 11864743280 in words is "eleven billion, eight hundred sixty-four million, seven hundred forty-three thousand, two hundred eighty".