145571519697 has 16 divisors (see below), whose sum is σ = 198770761728. Its totient is φ = 94713650640.

The previous prime is 145571519659. The next prime is 145571519701. The reversal of 145571519697 is 796915175541.

145571519697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145571519697 - 2⁶ = 145571519633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145571519697.

It is not an unprimeable number, because it can be changed into a prime (145571519647) 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 15 ways as a sum of consecutive naturals, for example, 299553 + ... + 617150.

It is an arithmetic number, because the mean of its divisors is an integer number (12423172608).

Almost surely, 2^145571519697 is an apocalyptic number.

It is an amenable number.

145571519697 is a deficient number, since it is larger than the sum of its proper divisors (53199242031).

145571519697 is a wasteful number, since it uses less digits than its factorization.

145571519697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917980.

The product of its digits is 11907000, while the sum is 60.

The spelling of 145571519697 in words is "one hundred forty-five billion, five hundred seventy-one million, five hundred nineteen thousand, six hundred ninety-seven".