2666456455 has 32 divisors (see below), whose sum is σ = 3479067648. Its totient is φ = 1950220800.

The previous prime is 2666456449. The next prime is 2666456479. The reversal of 2666456455 is 5546546662.

It is not a de Polignac number, because 2666456455 - 2²³ = 2658067847 is a prime.

It is a super-2 number, since 2×2666456455² = 14219980052822334050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2666456399 and 2666456408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4928485 + ... + 4929025.

It is an arithmetic number, because the mean of its divisors is an integer number (108720864).

Almost surely, 2^2666456455 is an apocalyptic number.

2666456455 is a deficient number, since it is larger than the sum of its proper divisors (812611193).

2666456455 is a wasteful number, since it uses less digits than its factorization.

2666456455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its digits is 5184000, while the sum is 49.

The square root of 2666456455 is about 51637.7425436085. The cubic root of 2666456455 is about 1386.6861095865.

The spelling of 2666456455 in words is "two billion, six hundred sixty-six million, four hundred fifty-six thousand, four hundred fifty-five".