66471460752 has 80 divisors (see below), whose sum is σ = 174730870080. Its totient is φ = 21768830976.

The previous prime is 66471460751. The next prime is 66471460763. The reversal of 66471460752 is 25706417466.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (66471460751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5638288 + ... + 5650064.

It is an arithmetic number, because the mean of its divisors is an integer number (2184135876).

Almost surely, 2^66471460752 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 66471460752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87365435040).

66471460752 is an abundant number, since it is smaller than the sum of its proper divisors (108259409328).

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

66471460752 is a wasteful number, since it uses less digits than its factorization.

66471460752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13840 (or 13834 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 66471460752 in words is "sixty-six billion, four hundred seventy-one million, four hundred sixty thousand, seven hundred fifty-two".