670121662187818 has 8 divisors (see below), whose sum is σ = 1005457208376960. Its totient is φ = 334969259395500.

The previous prime is 670121662187729. The next prime is 670121662187843. The reversal of 670121662187818 is 818781266121076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×670121662187818² (a number of 30 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 670121662187818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45785840058 + ... + 45785854693.

It is an arithmetic number, because the mean of its divisors is an integer number (125682151047120).

Almost surely, 2^{670121662187818} is an apocalyptic number.

670121662187818 is a deficient number, since it is larger than the sum of its proper divisors (335335546189142).

670121662187818 is a wasteful number, since it uses less digits than its factorization.

670121662187818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91571698412.

The product of its (nonzero) digits is 21676032, while the sum is 64.

The spelling of 670121662187818 in words is "six hundred seventy trillion, one hundred twenty-one billion, six hundred sixty-two million, one hundred eighty-seven thousand, eight hundred eighteen".