670121662187817 has 32 divisors (see below), whose sum is σ = 1137230000271360. Its totient is φ = 382038203123280.

The previous prime is 670121662187729. The next prime is 670121662187843. The reversal of 670121662187817 is 718781266121076.

It is not a de Polignac number, because 670121662187817 - 2¹⁴ = 670121662171433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (670121662183817) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4113163623 + ... + 4113326540.

It is an arithmetic number, because the mean of its divisors is an integer number (35538437508480).

Almost surely, 2^{670121662187817} is an apocalyptic number.

It is an amenable number.

670121662187817 is a deficient number, since it is larger than the sum of its proper divisors (467108338083543).

670121662187817 is a wasteful number, since it uses less digits than its factorization.

670121662187817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8226490610 (or 8226490604 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 63.

The spelling of 670121662187817 in words is "six hundred seventy trillion, one hundred twenty-one billion, six hundred sixty-two million, one hundred eighty-seven thousand, eight hundred seventeen".