70351142021 has 8 divisors (see below), whose sum is σ = 73047598200. Its totient is φ = 67672722880.

The previous prime is 70351142011. The next prime is 70351142027. The reversal of 70351142021 is 12024115307.

It can be written as a sum of positive squares in 4 ways, for example, as 12648376225 + 57702765796 = 112465^2 + 240214^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70351142021 - 2²² = 70346947717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70351142027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4501310 + ... + 4516911.

It is an arithmetic number, because the mean of its divisors is an integer number (9130949775).

Almost surely, 2^70351142021 is an apocalyptic number.

It is an amenable number.

70351142021 is a deficient number, since it is larger than the sum of its proper divisors (2696456179).

70351142021 is a wasteful number, since it uses less digits than its factorization.

70351142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9018519.

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 70351142021 its reverse (12024115307), we get a palindrome (82375257328).

The spelling of 70351142021 in words is "seventy billion, three hundred fifty-one million, one hundred forty-two thousand, twenty-one".