70687318365 has 12 divisors (see below), whose sum is σ = 122524685244. Its totient is φ = 37699903104.

The previous prime is 70687318337. The next prime is 70687318369. The reversal of 70687318365 is 56381378607.

It can be written as a sum of positive squares in 2 ways, for example, as 30634100676 + 40053217689 = 175026^2 + 200133^2 .

It is not a de Polignac number, because 70687318365 - 2⁷ = 70687318237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70687318369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785414604 + ... + 785414693.

It is an arithmetic number, because the mean of its divisors is an integer number (10210390437).

Almost surely, 2^70687318365 is an apocalyptic number.

It is an amenable number.

70687318365 is a deficient number, since it is larger than the sum of its proper divisors (51837366879).

70687318365 is a wasteful number, since it uses less digits than its factorization.

70687318365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570829308 (or 1570829305 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 70687318365 in words is "seventy billion, six hundred eighty-seven million, three hundred eighteen thousand, three hundred sixty-five".