806691145551 has 16 divisors (see below), whose sum is σ = 1077597237600. Its totient is φ = 536790417408.

The previous prime is 806691145511. The next prime is 806691145583. The reversal of 806691145551 is 155541196608.

It is not a de Polignac number, because 806691145551 - 2⁶ = 806691145487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 806691145494 and 806691145503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806691145511) 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, 3771855 + ... + 3979983.

It is an arithmetic number, because the mean of its divisors is an integer number (67349827350).

Almost surely, 2^806691145551 is an apocalyptic number.

806691145551 is a deficient number, since it is larger than the sum of its proper divisors (270906092049).

806691145551 is a wasteful number, since it uses less digits than its factorization.

806691145551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210538.

The product of its (nonzero) digits is 1296000, while the sum is 51.

The spelling of 806691145551 in words is "eight hundred six billion, six hundred ninety-one million, one hundred forty-five thousand, five hundred fifty-one".