71851811484 has 24 divisors (see below), whose sum is σ = 168134621200. Its totient is φ = 23881976064.

The previous prime is 71851811483. The next prime is 71851811519. The reversal of 71851811484 is 48411815817.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71851811483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8574109 + ... + 8582484.

Almost surely, 2^71851811484 is an apocalyptic number.

It is an amenable number.

71851811484 is an abundant number, since it is smaller than the sum of its proper divisors (96282809716).

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

71851811484 is a wasteful number, since it uses less digits than its factorization.

71851811484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17156949 (or 17156947 counting only the distinct ones).

The product of its digits is 286720, while the sum is 48.

The spelling of 71851811484 in words is "seventy-one billion, eight hundred fifty-one million, eight hundred eleven thousand, four hundred eighty-four".