71530905603 has 16 divisors (see below), whose sum is σ = 97959962880. Its totient is φ = 46394762976.

The previous prime is 71530905599. The next prime is 71530905643. The reversal of 71530905603 is 30650903517.

It is not a de Polignac number, because 71530905603 - 2² = 71530905599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71530905643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2637076 + ... + 2664062.

It is an arithmetic number, because the mean of its divisors is an integer number (6122497680).

Almost surely, 2^71530905603 is an apocalyptic number.

71530905603 is a deficient number, since it is larger than the sum of its proper divisors (26429057277).

71530905603 is a wasteful number, since it uses less digits than its factorization.

71530905603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50906.

The product of its (nonzero) digits is 85050, while the sum is 39.

The spelling of 71530905603 in words is "seventy-one billion, five hundred thirty million, nine hundred five thousand, six hundred three".