66410455280 has 120 divisors (see below), whose sum is σ = 175494830112. Its totient is φ = 23230084608.

The previous prime is 66410455259. The next prime is 66410455303. The reversal of 66410455280 is 8255401466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286997 + ... + 463883.

Almost surely, 2^66410455280 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 66410455280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87747415056).

66410455280 is an abundant number, since it is smaller than the sum of its proper divisors (109084374832).

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

66410455280 is a wasteful number, since it uses less digits than its factorization.

66410455280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176951 (or 176926 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 66410455280 in words is "sixty-six billion, four hundred ten million, four hundred fifty-five thousand, two hundred eighty".