86956881769 has 4 divisors (see below), whose sum is σ = 88254745744. Its totient is φ = 85659017796.

The previous prime is 86956881757. The next prime is 86956881841. The reversal of 86956881769 is 96718865968.

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 86956881769 - 2²¹ = 86954784617 is a prime.

It is a super-2 number, since 2×86956881769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86956881719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648931887 + ... + 648932020.

It is an arithmetic number, because the mean of its divisors is an integer number (22063686436).

Almost surely, 2^86956881769 is an apocalyptic number.

It is an amenable number.

86956881769 is a deficient number, since it is larger than the sum of its proper divisors (1297863975).

86956881769 is a wasteful number, since it uses less digits than its factorization.

86956881769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297863974.

The product of its digits is 313528320, while the sum is 73.

The spelling of 86956881769 in words is "eighty-six billion, nine hundred fifty-six million, eight hundred eighty-one thousand, seven hundred sixty-nine".