101243513255 has 4 divisors (see below), whose sum is σ = 121492215912. Its totient is φ = 80994810600.

The previous prime is 101243513237. The next prime is 101243513279. The reversal of 101243513255 is 552315342101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552315342101 = 18191 ⋅30362011.

It is not a de Polignac number, because 101243513255 - 2⁸ = 101243512999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10124351321 + ... + 10124351330.

It is an arithmetic number, because the mean of its divisors is an integer number (30373053978).

Almost surely, 2^101243513255 is an apocalyptic number.

101243513255 is a deficient number, since it is larger than the sum of its proper divisors (20248702657).

101243513255 is an equidigital number, since it uses as much as digits as its factorization.

101243513255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20248702656.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 101243513255 its reverse (552315342101), we get a palindrome (653558855356).

The spelling of 101243513255 in words is "one hundred one billion, two hundred forty-three million, five hundred thirteen thousand, two hundred fifty-five".