145021450793 has 4 divisors (see below), whose sum is σ = 146857165440. Its totient is φ = 143185736148.

The previous prime is 145021450789. The next prime is 145021450831. The reversal of 145021450793 is 397054120541.

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 145021450793 - 2² = 145021450789 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 145021450793.

It is not an unprimeable number, because it can be changed into a prime (145021455793) 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, 917857205 + ... + 917857362.

It is an arithmetic number, because the mean of its divisors is an integer number (36714291360).

Almost surely, 2^145021450793 is an apocalyptic number.

It is an amenable number.

145021450793 is a deficient number, since it is larger than the sum of its proper divisors (1835714647).

145021450793 is an equidigital number, since it uses as much as digits as its factorization.

145021450793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835714646.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 145021450793 in words is "one hundred forty-five billion, twenty-one million, four hundred fifty thousand, seven hundred ninety-three".