8815966722400 has 36 divisors (see below), whose sum is σ = 21521978763012. Its totient is φ = 3526386688640.

The previous prime is 8815966722373. The next prime is 8815966722461. The reversal of 8815966722400 is 42276695188.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5509978402 + ... + 5509980001.

It is an arithmetic number, because the mean of its divisors is an integer number (597832743417).

Almost surely, 2^{8815966722400} is an apocalyptic number.

8815966722400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8815966722400 is an abundant number, since it is smaller than the sum of its proper divisors (12706012040612).

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

8815966722400 is a wasteful number, since it uses less digits than its factorization.

8815966722400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019958423 (or 11019958410 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 8815966722400 in words is "eight trillion, eight hundred fifteen billion, nine hundred sixty-six million, seven hundred twenty-two thousand, four hundred".