102144247261 has 16 divisors (see below), whose sum is σ = 123654484224. Its totient is φ = 82367841024.

The previous prime is 102144247229. The next prime is 102144247301. The reversal of 102144247261 is 162742441201.

It is not a de Polignac number, because 102144247261 - 2⁵ = 102144247229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102144247211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111211 + ... + 465463.

It is an arithmetic number, because the mean of its divisors is an integer number (7728405264).

Almost surely, 2^102144247261 is an apocalyptic number.

It is an amenable number.

102144247261 is a deficient number, since it is larger than the sum of its proper divisors (21510236963).

102144247261 is a wasteful number, since it uses less digits than its factorization.

102144247261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356700.

The product of its (nonzero) digits is 21504, while the sum is 34.

Adding to 102144247261 its reverse (162742441201), we get a palindrome (264886688462).

The spelling of 102144247261 in words is "one hundred two billion, one hundred forty-four million, two hundred forty-seven thousand, two hundred sixty-one".