70661221429 has 32 divisors (see below), whose sum is σ = 77510079360. Its totient is φ = 64162854912.

The previous prime is 70661221387. The next prime is 70661221481. The reversal of 70661221429 is 92412216607.

It is a de Polignac number, because none of the positive numbers 2^k-70661221429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70661221391 and 70661221400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70661225429) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13397937 + ... + 13403209.

It is an arithmetic number, because the mean of its divisors is an integer number (2422189980).

Almost surely, 2^70661221429 is an apocalyptic number.

It is an amenable number.

70661221429 is a deficient number, since it is larger than the sum of its proper divisors (6848857931).

70661221429 is a wasteful number, since it uses less digits than its factorization.

70661221429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 70661221429 in words is "seventy billion, six hundred sixty-one million, two hundred twenty-one thousand, four hundred twenty-nine".