2666905288080 has 160 divisors (see below), whose sum is σ = 9019604136960. Its totient is φ = 646478384640.

The previous prime is 2666905288051. The next prime is 2666905288087. The reversal of 2666905288080 is 808825096662.

It is a super-2 number, since 2×2666905288080² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (2666905288087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55793631 + ... + 55841409.

It is an arithmetic number, because the mean of its divisors is an integer number (56372525856).

Almost surely, 2^{2666905288080} is an apocalyptic number.

2666905288080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666905288080 is an abundant number, since it is smaller than the sum of its proper divisors (6352698848880).

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

2666905288080 is a wasteful number, since it uses less digits than its factorization.

2666905288080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68949 (or 68943 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 2666905288080 in words is "two trillion, six hundred sixty-six billion, nine hundred five million, two hundred eighty-eight thousand, eighty".