66469173120 has 384 divisors, whose sum is σ = 277749051840. Its totient is φ = 14299103232.

The previous prime is 66469173101. The next prime is 66469173131. The reversal of 66469173120 is 2137196466.

66469173120 is a `hidden beast` number, since 6 + 6 + 469 + 173 + 12 + 0 = 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 (45).

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, 636954 + ... + 733926.

Almost surely, 2^66469173120 is an apocalyptic number.

66469173120 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 66469173120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138874525920).

66469173120 is an abundant number, since it is smaller than the sum of its proper divisors (211279878720).

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

66469173120 is a wasteful number, since it uses less digits than its factorization.

66469173120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97022 (or 97007 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 66469173120 in words is "sixty-six billion, four hundred sixty-nine million, one hundred seventy-three thousand, one hundred twenty".