827151666551 has 8 divisors (see below), whose sum is σ = 986416894464. Its totient is φ = 678161614680.

The previous prime is 827151666533. The next prime is 827151666557. The reversal of 827151666551 is 155666151728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 827151666551 - 2¹⁴ = 827151650167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 827151666493 and 827151666502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827151666557) 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 7 ways as a sum of consecutive naturals, for example, 2568793835 + ... + 2568794156.

It is an arithmetic number, because the mean of its divisors is an integer number (123302111808).

Almost surely, 2^827151666551 is an apocalyptic number.

827151666551 is a deficient number, since it is larger than the sum of its proper divisors (159265227913).

827151666551 is a wasteful number, since it uses less digits than its factorization.

827151666551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5137588021.

The product of its digits is 3024000, while the sum is 53.

The spelling of 827151666551 in words is "eight hundred twenty-seven billion, one hundred fifty-one million, six hundred sixty-six thousand, five hundred fifty-one".