71755423047 has 128 divisors (see below), whose sum is σ = 139908096000. Its totient is φ = 35213149440.

The previous prime is 71755423043. The next prime is 71755423081. The reversal of 71755423047 is 74032455717.

71755423047 is a `hidden beast` number, since 7 + 1 + 75 + 542 + 30 + 4 + 7 = 666.

It is not a de Polignac number, because 71755423047 - 2² = 71755423043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71755422993 and 71755423011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71755423043) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14968483 + ... + 14973275.

It is an arithmetic number, because the mean of its divisors is an integer number (1093032000).

Almost surely, 2^71755423047 is an apocalyptic number.

71755423047 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

71755423047 is a deficient number, since it is larger than the sum of its proper divisors (68152672953).

71755423047 is a wasteful number, since it uses less digits than its factorization.

71755423047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218 (or 5212 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 71755423047 in words is "seventy-one billion, seven hundred fifty-five million, four hundred twenty-three thousand, forty-seven".