6511166650812 has 24 divisors (see below), whose sum is σ = 15256290067200. Its totient is φ = 2161307757616.

The previous prime is 6511166650783. The next prime is 6511166650841. The reversal of 6511166650812 is 2180566611156.

It is an interprime number because it is at equal distance from previous prime (6511166650783) and next prime (6511166650841).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135137762 + ... + 1135143497.

It is an arithmetic number, because the mean of its divisors is an integer number (635678752800).

Almost surely, 2^{6511166650812} is an apocalyptic number.

It is an amenable number.

6511166650812 is an abundant number, since it is smaller than the sum of its proper divisors (8745123416388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6511166650812 is a wasteful number, since it uses less digits than its factorization.

6511166650812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270281505 (or 2270281503 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 6511166650812 in words is "six trillion, five hundred eleven billion, one hundred sixty-six million, six hundred fifty thousand, eight hundred twelve".