102243053505541 has 4 divisors (see below), whose sum is σ = 110107903775212. Its totient is φ = 94378203235872.

The previous prime is 102243053505511. The next prime is 102243053505547. The reversal of 102243053505541 is 145505350342201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58431561554916 + 43811491950625 = 7644054^2 + 6619025^2 .

It is a cyclic number.

It is not a de Polignac number, because 102243053505541 - 2⁹ = 102243053505029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102243053505494 and 102243053505503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102243053505547) 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, 3932425134816 + ... + 3932425134841.

It is an arithmetic number, because the mean of its divisors is an integer number (27526975943803).

Almost surely, 2^{102243053505541} is an apocalyptic number.

It is an amenable number.

102243053505541 is a deficient number, since it is larger than the sum of its proper divisors (7864850269671).

102243053505541 is an equidigital number, since it uses as much as digits as its factorization.

102243053505541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7864850269670.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 102243053505541 in words is "one hundred two trillion, two hundred forty-three billion, fifty-three million, five hundred five thousand, five hundred forty-one".