86745745508869 has 4 divisors (see below), whose sum is σ = 86773136022144. Its totient is φ = 86718354995596.

The previous prime is 86745745508791. The next prime is 86745745508887. The reversal of 86745745508869 is 96880554754768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86745745508869 - 2¹¹ = 86745745506821 is a prime.

It is a super-2 number, since 2×86745745508869² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86745745508792 and 86745745508801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86745745503869) 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, 13695251887 + ... + 13695258220.

It is an arithmetic number, because the mean of its divisors is an integer number (21693284005536).

Almost surely, 2^{86745745508869} is an apocalyptic number.

It is an amenable number.

86745745508869 is a deficient number, since it is larger than the sum of its proper divisors (27390513275).

86745745508869 is a wasteful number, since it uses less digits than its factorization.

86745745508869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27390513274.

The product of its (nonzero) digits is 16257024000, while the sum is 82.

The spelling of 86745745508869 in words is "eighty-six trillion, seven hundred forty-five billion, seven hundred forty-five million, five hundred eight thousand, eight hundred sixty-nine".