66425386000 has 160 divisors (see below), whose sum is σ = 164896767360. Its totient is φ = 25870784000.

The previous prime is 66425385991. The next prime is 66425386019. The reversal of 66425386000 is 68352466.

It is a happy number.

66425386000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 12623370 + ... + 12628630.

It is an arithmetic number, because the mean of its divisors is an integer number (1030604796).

Almost surely, 2^66425386000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66425386000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82448383680).

66425386000 is an abundant number, since it is smaller than the sum of its proper divisors (98471381360).

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

66425386000 is a wasteful number, since it uses less digits than its factorization.

66425386000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450 (or 5434 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 66425386000 in words is "sixty-six billion, four hundred twenty-five million, three hundred eighty-six thousand".