71550372263 has 4 divisors (see below), whose sum is σ = 72354309120. Its totient is φ = 70746435408.

The previous prime is 71550372211. The next prime is 71550372269. The reversal of 71550372263 is 36227305517.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71550372263 - 2¹⁶ = 71550306727 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 71550372263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71550372269) 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, 401968295 + ... + 401968472.

It is an arithmetic number, because the mean of its divisors is an integer number (18088577280).

Almost surely, 2^71550372263 is an apocalyptic number.

71550372263 is a deficient number, since it is larger than the sum of its proper divisors (803936857).

71550372263 is an equidigital number, since it uses as much as digits as its factorization.

71550372263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803936856.

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 71550372263 in words is "seventy-one billion, five hundred fifty million, three hundred seventy-two thousand, two hundred sixty-three".