2660260111566 has 16 divisors (see below), whose sum is σ = 5320860402000. Its totient is φ = 886696674048.

The previous prime is 2660260111549. The next prime is 2660260111567. The reversal of 2660260111566 is 6651110620662.

It is a super-2 number, since 2×2660260111566² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660260111567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14072401 + ... + 14260188.

It is an arithmetic number, because the mean of its divisors is an integer number (332553775125).

Almost surely, 2^{2660260111566} is an apocalyptic number.

2660260111566 is an abundant number, since it is smaller than the sum of its proper divisors (2660600290434).

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

2660260111566 is a wasteful number, since it uses less digits than its factorization.

2660260111566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28348243.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 2660260111566 in words is "two trillion, six hundred sixty billion, two hundred sixty million, one hundred eleven thousand, five hundred sixty-six".