145205521103 has 2 divisors, whose sum is σ = 145205521104. Its totient is φ = 145205521102.

The previous prime is 145205521099. The next prime is 145205521117. The reversal of 145205521103 is 301125502541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145205521103 - 2² = 145205521099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145205521133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72602760551 + 72602760552.

It is an arithmetic number, because the mean of its divisors is an integer number (72602760552).

Almost surely, 2^145205521103 is an apocalyptic number.

145205521103 is a deficient number, since it is larger than the sum of its proper divisors (1).

145205521103 is an equidigital number, since it uses as much as digits as its factorization.

145205521103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 145205521103 in words is "one hundred forty-five billion, two hundred five million, five hundred twenty-one thousand, one hundred three".