101523521149 has 2 divisors, whose sum is σ = 101523521150. Its totient is φ = 101523521148.

The previous prime is 101523521147. The next prime is 101523521213. The reversal of 101523521149 is 941125325101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99166418649 + 2357102500 = 314907^2 + 48550^2 .

It is a cyclic number.

It is not a de Polignac number, because 101523521149 - 2¹ = 101523521147 is a prime.

Together with 101523521147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101523521147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50761760574 + 50761760575.

It is an arithmetic number, because the mean of its divisors is an integer number (50761760575).

Almost surely, 2^101523521149 is an apocalyptic number.

It is an amenable number.

101523521149 is a deficient number, since it is larger than the sum of its proper divisors (1).

101523521149 is an equidigital number, since it uses as much as digits as its factorization.

101523521149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 101523521149 in words is "one hundred one billion, five hundred twenty-three million, five hundred twenty-one thousand, one hundred forty-nine".