266515025400166 has 8 divisors (see below), whose sum is σ = 399784506363144. Its totient is φ = 133253523279120.

The previous prime is 266515025400077. The next prime is 266515025400167. The reversal of 266515025400166 is 661004520515662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×266515025400166² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266515025400167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994626975 + ... + 1994760586.

It is an arithmetic number, because the mean of its divisors is an integer number (49973063295393).

Almost surely, 2^{266515025400166} is an apocalyptic number.

266515025400166 is a deficient number, since it is larger than the sum of its proper divisors (133269480962978).

266515025400166 is a wasteful number, since it uses less digits than its factorization.

266515025400166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989420966.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 266515025400166 in words is "two hundred sixty-six trillion, five hundred fifteen billion, twenty-five million, four hundred thousand, one hundred sixty-six".