71675720811 has 12 divisors (see below), whose sum is σ = 104151548592. Its totient is φ = 47497682256.

The previous prime is 71675720803. The next prime is 71675720813. The reversal of 71675720811 is 11802757617.

71675720811 is a `hidden beast` number, since 7 + 1 + 67 + 572 + 0 + 8 + 11 = 666.

It is not a de Polignac number, because 71675720811 - 2³ = 71675720803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71675720813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23842716 + ... + 23845721.

It is an arithmetic number, because the mean of its divisors is an integer number (8679295716).

Almost surely, 2^71675720811 is an apocalyptic number.

71675720811 is a deficient number, since it is larger than the sum of its proper divisors (32475827781).

71675720811 is a wasteful number, since it uses less digits than its factorization.

71675720811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47688610 (or 47688607 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 45.

The spelling of 71675720811 in words is "seventy-one billion, six hundred seventy-five million, seven hundred twenty thousand, eight hundred eleven".