145455766489 has 4 divisors (see below), whose sum is σ = 158679018000. Its totient is φ = 132232514980.

The previous prime is 145455766481. The next prime is 145455766499. The reversal of 145455766489 is 984667554541.

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, and also an emirpimes, since its reverse is a distinct semiprime: 984667554541 = 11 ⋅89515232231.

It is a cyclic number.

It is not a de Polignac number, because 145455766489 - 2³ = 145455766481 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 145455766489.

It is not an unprimeable number, because it can be changed into a prime (145455766481) 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, 6611625739 + ... + 6611625760.

It is an arithmetic number, because the mean of its divisors is an integer number (39669754500).

Almost surely, 2^145455766489 is an apocalyptic number.

It is an amenable number.

145455766489 is a deficient number, since it is larger than the sum of its proper divisors (13223251511).

145455766489 is a wasteful number, since it uses less digits than its factorization.

145455766489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13223251510.

The product of its digits is 145152000, while the sum is 64.

The spelling of 145455766489 in words is "one hundred forty-five billion, four hundred fifty-five million, seven hundred sixty-six thousand, four hundred eighty-nine".