70103603021 has 4 divisors (see below), whose sum is σ = 70120585500. Its totient is φ = 70086620544.

The previous prime is 70103602969. The next prime is 70103603071. The reversal of 70103603021 is 12030630107.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52629406921 + 17474196100 = 229411^2 + 132190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70103603021 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 (70103603071) 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 3 ways as a sum of consecutive naturals, for example, 8485046 + ... + 8493303.

It is an arithmetic number, because the mean of its divisors is an integer number (17530146375).

Almost surely, 2^70103603021 is an apocalyptic number.

It is an amenable number.

70103603021 is a deficient number, since it is larger than the sum of its proper divisors (16982479).

70103603021 is a wasteful number, since it uses less digits than its factorization.

70103603021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16982478.

The product of its (nonzero) digits is 756, while the sum is 23.

The spelling of 70103603021 in words is "seventy billion, one hundred three million, six hundred three thousand, twenty-one".