869154650811 has 20 divisors (see below), whose sum is σ = 1310278459600. Its totient is φ = 574120497456.

The previous prime is 869154650809. The next prime is 869154650827. The reversal of 869154650811 is 118056451968.

869154650811 is a `hidden beast` number, since 8 + 6 + 91 + 5 + 46 + 508 + 1 + 1 = 666.

It is not a de Polignac number, because 869154650811 - 2¹ = 869154650809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869154650801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49212751 + ... + 49230408.

It is an arithmetic number, because the mean of its divisors is an integer number (65513922980).

Almost surely, 2^869154650811 is an apocalyptic number.

869154650811 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

869154650811 is a deficient number, since it is larger than the sum of its proper divisors (441123808789).

869154650811 is a wasteful number, since it uses less digits than its factorization.

869154650811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98443280 (or 98443271 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 869154650811 in words is "eight hundred sixty-nine billion, one hundred fifty-four million, six hundred fifty thousand, eight hundred eleven".