145405423443 has 16 divisors (see below), whose sum is σ = 221618894336. Its totient is φ = 83070541440.

The previous prime is 145405423439. The next prime is 145405423483. The reversal of 145405423443 is 344324504541.

It is not a de Polignac number, because 145405423443 - 2² = 145405423439 is a prime.

It is a super-2 number, since 2×145405423443² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145405423483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663271 + ... + 854832.

It is an arithmetic number, because the mean of its divisors is an integer number (13851180896).

Almost surely, 2^145405423443 is an apocalyptic number.

145405423443 is a deficient number, since it is larger than the sum of its proper divisors (76213470893).

145405423443 is a wasteful number, since it uses less digits than its factorization.

145405423443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522674.

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 145405423443 its reverse (344324504541), we get a palindrome (489729927984).

The spelling of 145405423443 in words is "one hundred forty-five billion, four hundred five million, four hundred twenty-three thousand, four hundred forty-three".