101245111553 has 4 divisors (see below), whose sum is σ = 101250633300. Its totient is φ = 101239589808.

The previous prime is 101245111529. The next prime is 101245111603. The reversal of 101245111553 is 355111542101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355111542101 = 97 ⋅3660943733.

It can be written as a sum of positive squares in 2 ways, for example, as 57232428289 + 44012683264 = 239233^2 + 209792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101245111553 is a prime.

It is a super-2 number, since 2×101245111553² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101245111153) 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, 2733278 + ... + 2770071.

It is an arithmetic number, because the mean of its divisors is an integer number (25312658325).

Almost surely, 2^101245111553 is an apocalyptic number.

It is an amenable number.

101245111553 is a deficient number, since it is larger than the sum of its proper divisors (5521747).

101245111553 is an equidigital number, since it uses as much as digits as its factorization.

101245111553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521746.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 101245111553 its reverse (355111542101), we get a palindrome (456356653654).

The spelling of 101245111553 in words is "one hundred one billion, two hundred forty-five million, one hundred eleven thousand, five hundred fifty-three".