2166302402253 has 48 divisors (see below), whose sum is σ = 3445320528000. Its totient is φ = 1300743181440.

The previous prime is 2166302402221. The next prime is 2166302402371. The reversal of 2166302402253 is 3522042036612.

2166302402253 is a `hidden beast` number, since 2 + 1 + 66 + 302 + 40 + 2 + 253 = 666.

It is not a de Polignac number, because 2166302402253 - 2⁵ = 2166302402221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166302402653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5549376 + ... + 5926902.

It is an arithmetic number, because the mean of its divisors is an integer number (71777511000).

Almost surely, 2^{2166302402253} is an apocalyptic number.

It is an amenable number.

2166302402253 is a deficient number, since it is larger than the sum of its proper divisors (1279018125747).

2166302402253 is a wasteful number, since it uses less digits than its factorization.

2166302402253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378082 (or 378079 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 2166302402253 its reverse (3522042036612), we get a palindrome (5688344438865).

The spelling of 2166302402253 in words is "two trillion, one hundred sixty-six billion, three hundred two million, four hundred two thousand, two hundred fifty-three".