70387878307 has 4 divisors (see below), whose sum is σ = 70395119920. Its totient is φ = 70380636696.

The previous prime is 70387878283. The next prime is 70387878343.

70387878307 is nontrivially palindromic in base 10.

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 70387878307 - 2⁷ = 70387878179 is a prime.

It is a super-2 number, since 2×70387878307² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70387578307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3606207 + ... + 3625672.

It is an arithmetic number, because the mean of its divisors is an integer number (17598779980).

Almost surely, 2^70387878307 is an apocalyptic number.

70387878307 is a deficient number, since it is larger than the sum of its proper divisors (7241613).

70387878307 is an equidigital number, since it uses as much as digits as its factorization.

70387878307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241612.

The product of its (nonzero) digits is 11063808, while the sum is 58.

The spelling of 70387878307 in words is "seventy billion, three hundred eighty-seven million, eight hundred seventy-eight thousand, three hundred seven".