71563520146 has 16 divisors (see below), whose sum is σ = 108005422176. Its totient is φ = 35562260736.

The previous prime is 71563520143. The next prime is 71563520167. The reversal of 71563520146 is 64102536517.

It is a super-2 number, since 2×71563520146² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71563520099 and 71563520108.

It is not an unprimeable number, because it can be changed into a prime (71563520143) 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 7 ways as a sum of consecutive naturals, for example, 125365 + ... + 398551.

It is an arithmetic number, because the mean of its divisors is an integer number (6750338886).

Almost surely, 2^71563520146 is an apocalyptic number.

71563520146 is a deficient number, since it is larger than the sum of its proper divisors (36441902030).

71563520146 is a wasteful number, since it uses less digits than its factorization.

71563520146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273993.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 71563520146 in words is "seventy-one billion, five hundred sixty-three million, five hundred twenty thousand, one hundred forty-six".