11447913666780 has 72 divisors (see below), whose sum is σ = 34726597948224. Its totient is φ = 3052666224000.

The previous prime is 11447913666779. The next prime is 11447913666793. The reversal of 11447913666780 is 8766631974411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3882445 + ... + 6161915.

It is an arithmetic number, because the mean of its divisors is an integer number (482313860392).

Almost surely, 2^{11447913666780} is an apocalyptic number.

11447913666780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11447913666780 is an abundant number, since it is smaller than the sum of its proper divisors (23278684281444).

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

11447913666780 is a wasteful number, since it uses less digits than its factorization.

11447913666780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307387 (or 2307382 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 11447913666780 in words is "eleven trillion, four hundred forty-seven billion, nine hundred thirteen million, six hundred sixty-six thousand, seven hundred eighty".