71545002052 has 24 divisors (see below), whose sum is σ = 129305514240. Its totient is φ = 34601693280.

The previous prime is 71545002031. The next prime is 71545002127. The reversal of 71545002052 is 25020054517.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117123 + ... + 395989.

It is an arithmetic number, because the mean of its divisors is an integer number (5387729760).

Almost surely, 2^71545002052 is an apocalyptic number.

It is an amenable number.

71545002052 is a deficient number, since it is larger than the sum of its proper divisors (57760512188).

71545002052 is a wasteful number, since it uses less digits than its factorization.

71545002052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280971 (or 280969 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

Adding to 71545002052 its reverse (25020054517), we get a palindrome (96565056569).

The spelling of 71545002052 in words is "seventy-one billion, five hundred forty-five million, two thousand, fifty-two".