8166322006551 has 16 divisors (see below), whose sum is σ = 12151551110400. Its totient is φ = 5420231342424.

The previous prime is 8166322006523. The next prime is 8166322006553. The reversal of 8166322006551 is 1556002236618.

8166322006551 is a `hidden beast` number, since 8 + 1 + 6 + 632 + 2 + 0 + 0 + 6 + 5 + 5 + 1 = 666.

It is not a de Polignac number, because 8166322006551 - 2⁶ = 8166322006487 is a prime.

It is a super-2 number, since 2×8166322006551² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8166322006497 and 8166322006506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166322006553) 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, 666197331 + ... + 666209588.

It is an arithmetic number, because the mean of its divisors is an integer number (759471944400).

Almost surely, 2^{8166322006551} is an apocalyptic number.

8166322006551 is a deficient number, since it is larger than the sum of its proper divisors (3985229103849).

8166322006551 is a wasteful number, since it uses less digits than its factorization.

8166322006551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332407155 (or 1332407149 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 8166322006551 in words is "eight trillion, one hundred sixty-six billion, three hundred twenty-two million, six thousand, five hundred fifty-one".