2666020460257 has 16 divisors (see below), whose sum is σ = 3325012560000. Its totient is φ = 2076704231040.

The previous prime is 2666020460171. The next prime is 2666020460263. The reversal of 2666020460257 is 7520640206662.

It is a cyclic number.

It is not a de Polignac number, because 2666020460257 - 2³⁹ = 2116264646369 is a prime.

It is a super-2 number, since 2×2666020460257² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666020460657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5727132 + ... + 6175117.

It is an arithmetic number, because the mean of its divisors is an integer number (207813285000).

Almost surely, 2^{2666020460257} is an apocalyptic number.

It is an amenable number.

2666020460257 is a deficient number, since it is larger than the sum of its proper divisors (658992099743).

2666020460257 is a wasteful number, since it uses less digits than its factorization.

2666020460257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11905176.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 2666020460257 in words is "two trillion, six hundred sixty-six billion, twenty million, four hundred sixty thousand, two hundred fifty-seven".