66950118240 has 48 divisors (see below), whose sum is σ = 210892873968. Its totient is φ = 17853364736.

The previous prime is 66950118239. The next prime is 66950118251. The reversal of 66950118240 is 4281105966.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 66950118192 and 66950118201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69739227 + ... + 69740186.

It is an arithmetic number, because the mean of its divisors is an integer number (4393601541).

Almost surely, 2^66950118240 is an apocalyptic number.

66950118240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66950118240 is an abundant number, since it is smaller than the sum of its proper divisors (143942755728).

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

66950118240 is a wasteful number, since it uses less digits than its factorization.

66950118240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139479431 (or 139479423 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 66950118240 in words is "sixty-six billion, nine hundred fifty million, one hundred eighteen thousand, two hundred forty".