145516453507 has 4 divisors (see below), whose sum is σ = 145518221560. Its totient is φ = 145514685456.

The previous prime is 145516453487. The next prime is 145516453519. The reversal of 145516453507 is 705354615541.

145516453507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145516453507 - 2¹⁹ = 145515929219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145516457507) 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 in 3 ways as a sum of consecutive naturals, for example, 754218 + ... + 927295.

It is an arithmetic number, because the mean of its divisors is an integer number (36379555390).

Almost surely, 2^145516453507 is an apocalyptic number.

145516453507 is a deficient number, since it is larger than the sum of its proper divisors (1768053).

145516453507 is an equidigital number, since it uses as much as digits as its factorization.

145516453507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768052.

The product of its (nonzero) digits is 1260000, while the sum is 46.

The spelling of 145516453507 in words is "one hundred forty-five billion, five hundred sixteen million, four hundred fifty-three thousand, five hundred seven".