2666238351 has 16 divisors (see below), whose sum is σ = 4079846400. Its totient is φ = 1517187168.

The previous prime is 2666238347. The next prime is 2666238373. The reversal of 2666238351 is 1538326662.

It is not a de Polignac number, because 2666238351 - 2² = 2666238347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666238391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260596 + ... + 270633.

It is an arithmetic number, because the mean of its divisors is an integer number (254990400).

Almost surely, 2^2666238351 is an apocalyptic number.

2666238351 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2666238351 is a deficient number, since it is larger than the sum of its proper divisors (1413608049).

2666238351 is a wasteful number, since it uses less digits than its factorization.

2666238351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531478.

The product of its digits is 311040, while the sum is 42.

The square root of 2666238351 is about 51635.6306342820. The cubic root of 2666238351 is about 1386.6483003518.

The spelling of 2666238351 in words is "two billion, six hundred sixty-six million, two hundred thirty-eight thousand, three hundred fifty-one".