70643653406 has 16 divisors (see below), whose sum is σ = 106229246640. Its totient is φ = 35233989120.

The previous prime is 70643653387. The next prime is 70643653433. The reversal of 70643653406 is 60435634607.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1740350 + ... + 1780478.

It is an arithmetic number, because the mean of its divisors is an integer number (6639327915).

Almost surely, 2^70643653406 is an apocalyptic number.

70643653406 is a deficient number, since it is larger than the sum of its proper divisors (35585593234).

70643653406 is a wasteful number, since it uses less digits than its factorization.

70643653406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42299.

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 70643653406 in words is "seventy billion, six hundred forty-three million, six hundred fifty-three thousand, four hundred six".