71235653772 has 24 divisors (see below), whose sum is σ = 167741450800. Its totient is φ = 23527371456.

The previous prime is 71235653759. The next prime is 71235653777. The reversal of 71235653772 is 27735653217.

It is not an unprimeable number, because it can be changed into a prime (71235653777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27229447 + ... + 27232062.

Almost surely, 2^71235653772 is an apocalyptic number.

It is an amenable number.

71235653772 is an abundant number, since it is smaller than the sum of its proper divisors (96505797028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71235653772 is a wasteful number, since it uses less digits than its factorization.

71235653772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54461625 (or 54461623 counting only the distinct ones).

The product of its digits is 1852200, while the sum is 48.

The spelling of 71235653772 in words is "seventy-one billion, two hundred thirty-five million, six hundred fifty-three thousand, seven hundred seventy-two".