70785213650 has 12 divisors (see below), whose sum is σ = 131660497482. Its totient is φ = 28314085440.

The previous prime is 70785213647. The next prime is 70785213691. The reversal of 70785213650 is 5631258707.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 67041119929 + 3744093721 = 258923^2 + 61189^2 .

It is a super-2 number, since 2×70785213650² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 707852087 + ... + 707852186.

Almost surely, 2^70785213650 is an apocalyptic number.

70785213650 is a deficient number, since it is larger than the sum of its proper divisors (60875283832).

70785213650 is a wasteful number, since it uses less digits than its factorization.

70785213650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415704285 (or 1415704280 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 70785213650 in words is "seventy billion, seven hundred eighty-five million, two hundred thirteen thousand, six hundred fifty".