66922355533824 has 384 divisors, whose sum is σ = 226841168736000. Its totient is φ = 19096948703232.

The previous prime is 66922355533793. The next prime is 66922355533897. The reversal of 66922355533824 is 42833555322966.

66922355533824 is a `hidden beast` number, since 6 + 6 + 9 + 2 + 23 + 5 + 553 + 38 + 24 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313034392 + ... + 313248104.

It is an arithmetic number, because the mean of its divisors is an integer number (590732210250).

Almost surely, 2^{66922355533824} is an apocalyptic number.

66922355533824 is a gapful number since it is divisible by the number (64) 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 66922355533824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113420584368000).

66922355533824 is an abundant number, since it is smaller than the sum of its proper divisors (159918813202176).

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

66922355533824 is a wasteful number, since it uses less digits than its factorization.

66922355533824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214560 (or 214534 counting only the distinct ones).

The product of its digits is 279936000, while the sum is 63.

The spelling of 66922355533824 in words is "sixty-six trillion, nine hundred twenty-two billion, three hundred fifty-five million, five hundred thirty-three thousand, eight hundred twenty-four".