670781848315 has 4 divisors (see below), whose sum is σ = 804938217984. Its totient is φ = 536625478648.

The previous prime is 670781848307. The next prime is 670781848337. The reversal of 670781848315 is 513848187076.

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

It is a cyclic number.

It is not a de Polignac number, because 670781848315 - 2³ = 670781848307 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670781848315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67078184827 + ... + 67078184836.

It is an arithmetic number, because the mean of its divisors is an integer number (201234554496).

Almost surely, 2^670781848315 is an apocalyptic number.

670781848315 is a deficient number, since it is larger than the sum of its proper divisors (134156369669).

670781848315 is a wasteful number, since it uses less digits than its factorization.

670781848315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134156369668.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 670781848315 in words is "six hundred seventy billion, seven hundred eighty-one million, eight hundred forty-eight thousand, three hundred fifteen".