2666526249 has 16 divisors (see below), whose sum is σ = 3777376320. Its totient is φ = 1669993920.

The previous prime is 2666526227. The next prime is 2666526257. The reversal of 2666526249 is 9426256662.

It is not a de Polignac number, because 2666526249 - 2¹⁵ = 2666493481 is a prime.

It is a super-2 number, since 2×2666526249² = 14220724473212020002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2666526198 and 2666526207.

It is not an unprimeable number, because it can be changed into a prime (2666526649) 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, 410967 + ... + 417404.

It is an arithmetic number, because the mean of its divisors is an integer number (236086020).

Almost surely, 2^2666526249 is an apocalyptic number.

2666526249 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2666526249 is a deficient number, since it is larger than the sum of its proper divisors (1110850071).

2666526249 is a wasteful number, since it uses less digits than its factorization.

2666526249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828440.

The product of its digits is 1866240, while the sum is 48.

The square root of 2666526249 is about 51638.4183433226. The cubic root of 2666526249 is about 1386.6982082310.

The spelling of 2666526249 in words is "two billion, six hundred sixty-six million, five hundred twenty-six thousand, two hundred forty-nine".