70523173903 has 36 divisors (see below), whose sum is σ = 89136591600. Its totient is φ = 55747967184.

The previous prime is 70523173843. The next prime is 70523173913. The reversal of 70523173903 is 30937132507.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 70523173903 - 2²⁵ = 70489619471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70523173913) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 63937050 + ... + 63938152.

Almost surely, 2^70523173903 is an apocalyptic number.

70523173903 is a deficient number, since it is larger than the sum of its proper divisors (18613417697).

70523173903 is an frugal number, since it uses more digits than its factorization.

70523173903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 40.

The spelling of 70523173903 in words is "seventy billion, five hundred twenty-three million, one hundred seventy-three thousand, nine hundred three".