8973221164820 has 24 divisors (see below), whose sum is σ = 20556833941728. Its totient is φ = 3262989514400.

The previous prime is 8973221164807. The next prime is 8973221164837. The reversal of 8973221164820 is 284611223798.

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, 20393684246 + ... + 20393684685.

It is an arithmetic number, because the mean of its divisors is an integer number (856534747572).

Almost surely, 2^{8973221164820} is an apocalyptic number.

It is an amenable number.

8973221164820 is an abundant number, since it is smaller than the sum of its proper divisors (11583612776908).

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

8973221164820 is a wasteful number, since it uses less digits than its factorization.

8973221164820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40787368951 (or 40787368949 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 8973221164820 in words is "eight trillion, nine hundred seventy-three billion, two hundred twenty-one million, one hundred sixty-four thousand, eight hundred twenty".