70205405621443 has 32 divisors (see below), whose sum is σ = 75936048249600. Its totient is φ = 64703618574336.

The previous prime is 70205405621381. The next prime is 70205405621447. The reversal of 70205405621443 is 34412650450207.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70205405621443 is a prime.

It is a super-3 number, since 3×70205405621443³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70205405621443.

It is not an unprimeable number, because it can be changed into a prime (70205405621447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81019771 + ... + 81881707.

It is an arithmetic number, because the mean of its divisors is an integer number (2373001507800).

Almost surely, 2^{70205405621443} is an apocalyptic number.

70205405621443 is a deficient number, since it is larger than the sum of its proper divisors (5730642628157).

70205405621443 is a wasteful number, since it uses less digits than its factorization.

70205405621443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862771.

The product of its (nonzero) digits is 806400, while the sum is 43.

The spelling of 70205405621443 in words is "seventy trillion, two hundred five billion, four hundred five million, six hundred twenty-one thousand, four hundred forty-three".