145203405221441 has 32 divisors (see below), whose sum is σ = 182277281525760. Its totient is φ = 112781993391936.

The previous prime is 145203405221401. The next prime is 145203405221447. The reversal of 145203405221441 is 144122504302541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145203405221441 is a prime.

It is a super-2 number, since 2×145203405221441² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145203405221395 and 145203405221404.

It is not an unprimeable number, because it can be changed into a prime (145203405221447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 626633495 + ... + 626865171.

It is an arithmetic number, because the mean of its divisors is an integer number (5696165047680).

Almost surely, 2^{145203405221441} is an apocalyptic number.

It is an amenable number.

145203405221441 is a deficient number, since it is larger than the sum of its proper divisors (37073876304319).

145203405221441 is a wasteful number, since it uses less digits than its factorization.

145203405221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436613.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 145203405221441 its reverse (144122504302541), we get a palindrome (289325909523982).

The spelling of 145203405221441 in words is "one hundred forty-five trillion, two hundred three billion, four hundred five million, two hundred twenty-one thousand, four hundred forty-one".