667400124152240 has 80 divisors (see below), whose sum is σ = 1631527324764480. Its totient is φ = 253529046543360.

The previous prime is 667400124152191. The next prime is 667400124152261. The reversal of 667400124152240 is 42251421004766.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 667400124152191 and 667400124152200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2357829524 + ... + 2358112563.

It is an arithmetic number, because the mean of its divisors is an integer number (20394091559556).

Almost surely, 2^{667400124152240} is an apocalyptic number.

It is an amenable number.

667400124152240 is an abundant number, since it is smaller than the sum of its proper divisors (964127200612240).

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

667400124152240 is a wasteful number, since it uses less digits than its factorization.

667400124152240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4715942190 (or 4715942184 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 667400124152240 in words is "six hundred sixty-seven trillion, four hundred billion, one hundred twenty-four million, one hundred fifty-two thousand, two hundred forty".