2155061464566 has 16 divisors (see below), whose sum is σ = 4310157671424. Its totient is φ = 718348031144.

The previous prime is 2155061464541. The next prime is 2155061464601. The reversal of 2155061464566 is 6654641605512.

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, 603330 + ... + 2161973.

It is an arithmetic number, because the mean of its divisors is an integer number (269384854464).

Almost surely, 2^{2155061464566} is an apocalyptic number.

2155061464566 is an abundant number, since it is smaller than the sum of its proper divisors (2155096206858).

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

2155061464566 is a wasteful number, since it uses less digits than its factorization.

2155061464566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895195.

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 2155061464566 in words is "two trillion, one hundred fifty-five billion, sixty-one million, four hundred sixty-four thousand, five hundred sixty-six".