2660115553263 has 64 divisors (see below), whose sum is σ = 4520006149120. Its totient is φ = 1514633198976.

The previous prime is 2660115553259. The next prime is 2660115553343. The reversal of 2660115553263 is 3623555110662.

2660115553263 is a `hidden beast` number, since 2 + 6 + 6 + 0 + 1 + 1 + 55 + 532 + 63 = 666.

It is not a de Polignac number, because 2660115553263 - 2² = 2660115553259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660115553223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 266726745 + ... + 266736717.

It is an arithmetic number, because the mean of its divisors is an integer number (70625096080).

Almost surely, 2^{2660115553263} is an apocalyptic number.

2660115553263 is a deficient number, since it is larger than the sum of its proper divisors (1859890595857).

2660115553263 is a wasteful number, since it uses less digits than its factorization.

2660115553263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14893 (or 14887 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 2660115553263 in words is "two trillion, six hundred sixty billion, one hundred fifteen million, five hundred fifty-three thousand, two hundred sixty-three".