670351518418 has 4 divisors (see below), whose sum is σ = 1005527277630. Its totient is φ = 335175759208.

The previous prime is 670351518409. The next prime is 670351518427. The reversal of 670351518418 is 814815153076.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (670351518409) and next prime (670351518427).

It can be written as a sum of positive squares in only one way, i.e., 456026038209 + 214325480209 = 675297^2 + 462953^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167587879603 + ... + 167587879606.

Almost surely, 2^670351518418 is an apocalyptic number.

670351518418 is a deficient number, since it is larger than the sum of its proper divisors (335175759212).

670351518418 is a wasteful number, since it uses less digits than its factorization.

670351518418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335175759211.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 670351518418 in words is "six hundred seventy billion, three hundred fifty-one million, five hundred eighteen thousand, four hundred eighteen".