2666455020 has 36 divisors (see below), whose sum is σ = 8088247440. Its totient is φ = 711054624.

The previous prime is 2666455007. The next prime is 2666455037. The reversal of 2666455020 is 205546662.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7406640 + ... + 7406999.

It is an arithmetic number, because the mean of its divisors is an integer number (224673540).

Almost surely, 2^2666455020 is an apocalyptic number.

2666455020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666455020 is an abundant number, since it is smaller than the sum of its proper divisors (5421792420).

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

2666455020 is a wasteful number, since it uses less digits than its factorization.

2666455020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14813654 (or 14813649 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2666455020 is about 51637.7286487312. The cubic root of 2666455020 is about 1386.6858608300.

The spelling of 2666455020 in words is "two billion, six hundred sixty-six million, four hundred fifty-five thousand, twenty".