70038436690 has 24 divisors (see below), whose sum is σ = 133053635340. Its totient is φ = 26540879904.

The previous prime is 70038436651. The next prime is 70038436733. The reversal of 70038436690 is 9663483007.

It can be written as a sum of positive squares in 2 ways, for example, as 58436777169 + 11601659521 = 241737^2 + 107711^2 .

It is a super-2 number, since 2×70038436690² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70038436690.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9697005 + ... + 9704224.

Almost surely, 2^70038436690 is an apocalyptic number.

70038436690 is a deficient number, since it is larger than the sum of its proper divisors (63015198650).

70038436690 is a wasteful number, since it uses less digits than its factorization.

70038436690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19401274 (or 19401255 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 70038436690 in words is "seventy billion, thirty-eight million, four hundred thirty-six thousand, six hundred ninety".