689091516811 has 16 divisors (see below), whose sum is σ = 727537075200. Its totient is φ = 650866533408.

The previous prime is 689091516761. The next prime is 689091516877. The reversal of 689091516811 is 118615190986.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 689091516811 - 2²¹ = 689089419659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689091816811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8930745 + ... + 9007573.

It is an arithmetic number, because the mean of its divisors is an integer number (45471067200).

Almost surely, 2^689091516811 is an apocalyptic number.

689091516811 is a deficient number, since it is larger than the sum of its proper divisors (38445558389).

689091516811 is a wasteful number, since it uses less digits than its factorization.

689091516811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78258.

The product of its (nonzero) digits is 933120, while the sum is 55.

The spelling of 689091516811 in words is "six hundred eighty-nine billion, ninety-one million, five hundred sixteen thousand, eight hundred eleven".