2161310135253 has 8 divisors (see below), whose sum is σ = 3051261367488. Its totient is φ = 1356116163264.

The previous prime is 2161310135203. The next prime is 2161310135267. The reversal of 2161310135253 is 3525310131612.

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

It is not a de Polignac number, because 2161310135253 - 2¹⁰ = 2161310134229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161310135203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21189315001 + ... + 21189315102.

It is an arithmetic number, because the mean of its divisors is an integer number (381407670936).

Almost surely, 2^{2161310135253} is an apocalyptic number.

It is an amenable number.

2161310135253 is a deficient number, since it is larger than the sum of its proper divisors (889951232235).

2161310135253 is a wasteful number, since it uses less digits than its factorization.

2161310135253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42378630123.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 2161310135253 its reverse (3525310131612), we get a palindrome (5686620266865).

The spelling of 2161310135253 in words is "two trillion, one hundred sixty-one billion, three hundred ten million, one hundred thirty-five thousand, two hundred fifty-three".