266153021551263 has 32 divisors (see below), whose sum is σ = 442437244411392. Its totient is φ = 138260980915200.

The previous prime is 266153021551259. The next prime is 266153021551297. The reversal of 266153021551263 is 362155120351662.

It is not a de Polignac number, because 266153021551263 - 2² = 266153021551259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266153021551223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118600183 + ... + 120823463.

It is an arithmetic number, because the mean of its divisors is an integer number (13826163887856).

Almost surely, 2^{266153021551263} is an apocalyptic number.

266153021551263 is a deficient number, since it is larger than the sum of its proper divisors (176284222860129).

266153021551263 is a wasteful number, since it uses less digits than its factorization.

266153021551263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741535.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 266153021551263 in words is "two hundred sixty-six trillion, one hundred fifty-three billion, twenty-one million, five hundred fifty-one thousand, two hundred sixty-three".