70783829221 has 32 divisors (see below), whose sum is σ = 83618196480. Its totient is φ = 58666519296.

The previous prime is 70783829201. The next prime is 70783829251. The reversal of 70783829221 is 12292838707.

It is a happy number.

It is not a de Polignac number, because 70783829221 - 2⁵ = 70783829189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70783829201) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 24432045 + ... + 24434941.

It is an arithmetic number, because the mean of its divisors is an integer number (2613068640).

Almost surely, 2^70783829221 is an apocalyptic number.

It is an amenable number.

70783829221 is a deficient number, since it is larger than the sum of its proper divisors (12834367259).

70783829221 is a wasteful number, since it uses less digits than its factorization.

70783829221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 70783829221 in words is "seventy billion, seven hundred eighty-three million, eight hundred twenty-nine thousand, two hundred twenty-one".