2163331551653 has 4 divisors (see below), whose sum is σ = 2233116440448. Its totient is φ = 2093546662860.

The previous prime is 2163331551551. The next prime is 2163331551697. The reversal of 2163331551653 is 3561551333612.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2163331551653 - 2³⁸ = 1888453644709 is a prime.

It is a super-3 number, since 3×2163331551653³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163331551253) 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, 34892444351 + ... + 34892444412.

It is an arithmetic number, because the mean of its divisors is an integer number (558279110112).

Almost surely, 2^{2163331551653} is an apocalyptic number.

It is an amenable number.

2163331551653 is a deficient number, since it is larger than the sum of its proper divisors (69784888795).

2163331551653 is an equidigital number, since it uses as much as digits as its factorization.

2163331551653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69784888794.

The product of its digits is 729000, while the sum is 44.

The spelling of 2163331551653 in words is "two trillion, one hundred sixty-three billion, three hundred thirty-one million, five hundred fifty-one thousand, six hundred fifty-three".