145520015423 has 2 divisors, whose sum is σ = 145520015424. Its totient is φ = 145520015422.

The previous prime is 145520015413. The next prime is 145520015483. The reversal of 145520015423 is 324510025541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145520015423 - 2²⁰ = 145518966847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145520015423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145520015413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72760007711 + 72760007712.

It is an arithmetic number, because the mean of its divisors is an integer number (72760007712).

Almost surely, 2^145520015423 is an apocalyptic number.

145520015423 is a deficient number, since it is larger than the sum of its proper divisors (1).

145520015423 is an equidigital number, since it uses as much as digits as its factorization.

145520015423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 145520015423 in words is "one hundred forty-five billion, five hundred twenty million, fifteen thousand, four hundred twenty-three".