145517505479 has 2 divisors, whose sum is σ = 145517505480. Its totient is φ = 145517505478.

The previous prime is 145517505451. The next prime is 145517505527. The reversal of 145517505479 is 974505715541.

It is a happy number.

145517505479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145517505479 - 2¹⁶ = 145517439943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145517505479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145517505079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72758752739 + 72758752740.

It is an arithmetic number, because the mean of its divisors is an integer number (72758752740).

Almost surely, 2^145517505479 is an apocalyptic number.

145517505479 is a deficient number, since it is larger than the sum of its proper divisors (1).

145517505479 is an equidigital number, since it uses as much as digits as its factorization.

145517505479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410000, while the sum is 53.

The spelling of 145517505479 in words is "one hundred forty-five billion, five hundred seventeen million, five hundred five thousand, four hundred seventy-nine".