71880211547 has 4 divisors (see below), whose sum is σ = 75005438160. Its totient is φ = 68754984936.

The previous prime is 71880211519. The next prime is 71880211567. The reversal of 71880211547 is 74511208817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74511208817 = 173 ⋅430700629.

It is a cyclic number.

It is not a de Polignac number, because 71880211547 - 2²⁸ = 71611776091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71880211498 and 71880211507.

It is not an unprimeable number, because it can be changed into a prime (71880211517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1562613272 + ... + 1562613317.

It is an arithmetic number, because the mean of its divisors is an integer number (18751359540).

Almost surely, 2^71880211547 is an apocalyptic number.

71880211547 is a deficient number, since it is larger than the sum of its proper divisors (3125226613).

71880211547 is a wasteful number, since it uses less digits than its factorization.

71880211547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125226612.

The product of its (nonzero) digits is 125440, while the sum is 44.

The spelling of 71880211547 in words is "seventy-one billion, eight hundred eighty million, two hundred eleven thousand, five hundred forty-seven".