70712391913 has 4 divisors (see below), whose sum is σ = 70782474580. Its totient is φ = 70642309248.

The previous prime is 70712391863. The next prime is 70712391949. The reversal of 70712391913 is 31919321707.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46728604224 + 23983787689 = 216168^2 + 154867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70712391913 is a prime.

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 70712391913.

It is not an unprimeable number, because it can be changed into a prime (70712391413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35039820 + ... + 35041837.

It is an arithmetic number, because the mean of its divisors is an integer number (17695618645).

Almost surely, 2^70712391913 is an apocalyptic number.

It is an amenable number.

70712391913 is a deficient number, since it is larger than the sum of its proper divisors (70082667).

70712391913 is a wasteful number, since it uses less digits than its factorization.

70712391913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70082666.

The product of its (nonzero) digits is 71442, while the sum is 43.

The spelling of 70712391913 in words is "seventy billion, seven hundred twelve million, three hundred ninety-one thousand, nine hundred thirteen".