145573375541 has 4 divisors (see below), whose sum is σ = 158807318784. Its totient is φ = 132339432300.

The previous prime is 145573375513. The next prime is 145573375547.

145573375541 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145573375541 - 2¹⁸ = 145573113397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145573375541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145573375547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6616971605 + ... + 6616971626.

It is an arithmetic number, because the mean of its divisors is an integer number (39701829696).

Almost surely, 2^145573375541 is an apocalyptic number.

145573375541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145573375541 is a deficient number, since it is larger than the sum of its proper divisors (13233943243).

145573375541 is a wasteful number, since it uses less digits than its factorization.

145573375541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13233943242.

The product of its digits is 4410000, while the sum is 50.

The spelling of 145573375541 in words is "one hundred forty-five billion, five hundred seventy-three million, three hundred seventy-five thousand, five hundred forty-one".