145414144421 has 8 divisors (see below), whose sum is σ = 178971254784. Its totient is φ = 115052949360.

The previous prime is 145414144397. The next prime is 145414144423. The reversal of 145414144421 is 124441414541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145414144421 - 2⁶ = 145414144357 is a prime.

It is a super-2 number, since 2×145414144421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145414144423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798978725 + ... + 798978906.

It is an arithmetic number, because the mean of its divisors is an integer number (22371406848).

Almost surely, 2^145414144421 is an apocalyptic number.

It is an amenable number.

145414144421 is a deficient number, since it is larger than the sum of its proper divisors (33557110363).

145414144421 is a wasteful number, since it uses less digits than its factorization.

145414144421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597957651.

The product of its digits is 40960, while the sum is 35.

Adding to 145414144421 its reverse (124441414541), we get a palindrome (269855558962).

The spelling of 145414144421 in words is "one hundred forty-five billion, four hundred fourteen million, one hundred forty-four thousand, four hundred twenty-one".