101520023528489 has 2 divisors, whose sum is σ = 101520023528490. Its totient is φ = 101520023528488.

The previous prime is 101520023528309. The next prime is 101520023528509. The reversal of 101520023528489 is 984825320025101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65104048789264 + 36415974739225 = 8068708^2 + 6034565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101520023528489 is a prime.

It is not a weakly prime, because it can be changed into another prime (101520023525489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50760011764244 + 50760011764245.

It is an arithmetic number, because the mean of its divisors is an integer number (50760011764245).

Almost surely, 2^{101520023528489} is an apocalyptic number.

It is an amenable number.

101520023528489 is a deficient number, since it is larger than the sum of its proper divisors (1).

101520023528489 is an equidigital number, since it uses as much as digits as its factorization.

101520023528489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 101520023528489 in words is "one hundred one trillion, five hundred twenty billion, twenty-three million, five hundred twenty-eight thousand, four hundred eighty-nine".