70643836403 has 24 divisors (see below), whose sum is σ = 84121887744. Its totient is φ = 59125189200.

The previous prime is 70643836399. The next prime is 70643836429. The reversal of 70643836403 is 30463834607.

It is not a de Polignac number, because 70643836403 - 2² = 70643836399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70643836433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 957008 + ... + 1028178.

It is an arithmetic number, because the mean of its divisors is an integer number (3505078656).

Almost surely, 2^70643836403 is an apocalyptic number.

70643836403 is a deficient number, since it is larger than the sum of its proper divisors (13478051341).

70643836403 is a wasteful number, since it uses less digits than its factorization.

70643836403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71663 (or 71656 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 70643836403 in words is "seventy billion, six hundred forty-three million, eight hundred thirty-six thousand, four hundred three".