70732575173 has 4 divisors (see below), whose sum is σ = 76173542508. Its totient is φ = 65291607840.

The previous prime is 70732575169. The next prime is 70732575203. The reversal of 70732575173 is 37157523707.

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 33554179684 + 37178395489 = 183178^2 + 192817^2 .

It is a cyclic number.

It is not a de Polignac number, because 70732575173 - 2² = 70732575169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70732575113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720483648 + ... + 2720483673.

It is an arithmetic number, because the mean of its divisors is an integer number (19043385627).

Almost surely, 2^70732575173 is an apocalyptic number.

It is an amenable number.

70732575173 is a deficient number, since it is larger than the sum of its proper divisors (5440967335).

70732575173 is a wasteful number, since it uses less digits than its factorization.

70732575173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440967334.

The product of its (nonzero) digits is 1080450, while the sum is 47.

The spelling of 70732575173 in words is "seventy billion, seven hundred thirty-two million, five hundred seventy-five thousand, one hundred seventy-three".