71812711047 has 16 divisors (see below), whose sum is σ = 119376974592. Its totient is φ = 37305304320.

The previous prime is 71812711007. The next prime is 71812711063. The reversal of 71812711047 is 74011721817.

It is not a de Polignac number, because 71812711047 - 2¹⁴ = 71812694663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71812710996 and 71812711014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71812711007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155438538 + ... + 155438999.

It is an arithmetic number, because the mean of its divisors is an integer number (7461060912).

Almost surely, 2^71812711047 is an apocalyptic number.

71812711047 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

71812711047 is a deficient number, since it is larger than the sum of its proper divisors (47564263545).

71812711047 is a wasteful number, since it uses less digits than its factorization.

71812711047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310877558.

The product of its (nonzero) digits is 21952, while the sum is 39.

The spelling of 71812711047 in words is "seventy-one billion, eight hundred twelve million, seven hundred eleven thousand, forty-seven".