511445566142166 has 16 divisors (see below), whose sum is σ = 1023371137533888. Its totient is φ = 170401854505800.

The previous prime is 511445566142111. The next prime is 511445566142197. The reversal of 511445566142166 is 661241665544115.

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, 20000204880 + ... + 20000230451.

It is an arithmetic number, because the mean of its divisors is an integer number (63960696095868).

Almost surely, 2^{511445566142166} is an apocalyptic number.

511445566142166 is an abundant number, since it is smaller than the sum of its proper divisors (511925571391722).

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

511445566142166 is a wasteful number, since it uses less digits than its factorization.

511445566142166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40000437467.

The product of its digits is 20736000, while the sum is 57.

The spelling of 511445566142166 in words is "five hundred eleven trillion, four hundred forty-five billion, five hundred sixty-six million, one hundred forty-two thousand, one hundred sixty-six".