66667433444340 has 96 divisors (see below), whose sum is σ = 197693631797760. Its totient is φ = 16728468350976.

The previous prime is 66667433444333. The next prime is 66667433444407. The reversal of 66667433444340 is 4344433476666.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2770195 + ... + 11874714.

It is an arithmetic number, because the mean of its divisors is an integer number (2059308664560).

Almost surely, 2^{66667433444340} is an apocalyptic number.

66667433444340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66667433444340 is an abundant number, since it is smaller than the sum of its proper divisors (131026198353420).

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

66667433444340 is a wasteful number, since it uses less digits than its factorization.

66667433444340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14649401 (or 14649399 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 60.

The spelling of 66667433444340 in words is "sixty-six trillion, six hundred sixty-seven billion, four hundred thirty-three million, four hundred forty-four thousand, three hundred forty".