66150178480 has 20 divisors (see below), whose sum is σ = 153799165152. Its totient is φ = 26460071360.

The previous prime is 66150178463. The next prime is 66150178481. The reversal of 66150178480 is 8487105166.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×66150178480² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66150178480.

It is not an unprimeable number, because it can be changed into a prime (66150178481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413438536 + ... + 413438695.

Almost surely, 2^66150178480 is an apocalyptic number.

It is an amenable number.

66150178480 is an abundant number, since it is smaller than the sum of its proper divisors (87648986672).

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

66150178480 is a wasteful number, since it uses less digits than its factorization.

66150178480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826877244 (or 826877238 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 66150178480 in words is "sixty-six billion, one hundred fifty million, one hundred seventy-eight thousand, four hundred eighty".