69345021871 has 4 divisors (see below), whose sum is σ = 69356016144. Its totient is φ = 69334027600.

The previous prime is 69345021869. The next prime is 69345021899. The reversal of 69345021871 is 17812054396.

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 69345021871 - 2¹ = 69345021869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69345021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5487670 + ... + 5500291.

It is an arithmetic number, because the mean of its divisors is an integer number (17339004036).

It is a 1-persistent number, because it is pandigital, but 2⋅69345021871 = 138690043742 is not.

Almost surely, 2^69345021871 is an apocalyptic number.

69345021871 is a deficient number, since it is larger than the sum of its proper divisors (10994273).

69345021871 is a wasteful number, since it uses less digits than its factorization.

69345021871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10994272.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 69345021871 in words is "sixty-nine billion, three hundred forty-five million, twenty-one thousand, eight hundred seventy-one".