71563520147 has 48 divisors (see below), whose sum is σ = 85544870400. Its totient is φ = 59675616000.

The previous prime is 71563520143. The next prime is 71563520167. The reversal of 71563520147 is 74102536517.

It is not a de Polignac number, because 71563520147 - 2² = 71563520143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71563520143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119471354 + ... + 119471952.

It is an arithmetic number, because the mean of its divisors is an integer number (1782184800).

Almost surely, 2^71563520147 is an apocalyptic number.

71563520147 is a deficient number, since it is larger than the sum of its proper divisors (13981350253).

71563520147 is a wasteful number, since it uses less digits than its factorization.

71563520147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 71563520147 in words is "seventy-one billion, five hundred sixty-three million, five hundred twenty thousand, one hundred forty-seven".