69668555072220 has 144 divisors (see below), whose sum is σ = 227641029950880. Its totient is φ = 17144881371648.

The previous prime is 69668555072201. The next prime is 69668555072321. The reversal of 69668555072220 is 2227055586696.

69668555072220 is a `hidden beast` number, since 6 + 9 + 6 + 6 + 8 + 5 + 550 + 72 + 2 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5602387 + ... + 13066133.

It is an arithmetic number, because the mean of its divisors is an integer number (1580840485770).

Almost surely, 2^{69668555072220} is an apocalyptic number.

69668555072220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69668555072220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113820514975440).

69668555072220 is an abundant number, since it is smaller than the sum of its proper divisors (157972474878660).

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

69668555072220 is a wasteful number, since it uses less digits than its factorization.

69668555072220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7467764 (or 7467759 counting only the distinct ones).

The product of its (nonzero) digits is 108864000, while the sum is 63.

The spelling of 69668555072220 in words is "sixty-nine trillion, six hundred sixty-eight billion, five hundred fifty-five million, seventy-two thousand, two hundred twenty".