71611254563 has 8 divisors (see below), whose sum is σ = 75826400400. Its totient is φ = 67396410880.

The previous prime is 71611254551. The next prime is 71611254571. The reversal of 71611254563 is 36545211617.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71611254563 - 2²⁰ = 71610205987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71611254563.

It is not an unprimeable number, because it can be changed into a prime (71611254863) 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, 570203 + ... + 684363.

It is an arithmetic number, because the mean of its divisors is an integer number (9478300050).

Almost surely, 2^71611254563 is an apocalyptic number.

71611254563 is a deficient number, since it is larger than the sum of its proper divisors (4215145837).

71611254563 is a wasteful number, since it uses less digits than its factorization.

71611254563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151077.

The product of its digits is 151200, while the sum is 41.

The spelling of 71611254563 in words is "seventy-one billion, six hundred eleven million, two hundred fifty-four thousand, five hundred sixty-three".