26640666052275 has 288 divisors, whose sum is σ = 52924728314880. Its totient is φ = 11710605312000.

The previous prime is 26640666052267. The next prime is 26640666052289. The reversal of 26640666052275 is 57225066604662.

It is not a de Polignac number, because 26640666052275 - 2³ = 26640666052267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3159842310 + ... + 3159850740.

It is an arithmetic number, because the mean of its divisors is an integer number (183766417760).

Almost surely, 2^{26640666052275} is an apocalyptic number.

26640666052275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26640666052275 is a deficient number, since it is larger than the sum of its proper divisors (26284062262605).

26640666052275 is a wasteful number, since it uses less digits than its factorization.

26640666052275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8975 (or 8953 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 57.

The spelling of 26640666052275 in words is "twenty-six trillion, six hundred forty billion, six hundred sixty-six million, fifty-two thousand, two hundred seventy-five".