145421504007 has 16 divisors (see below), whose sum is σ = 208821139968. Its totient is φ = 89485538400.

The previous prime is 145421503999. The next prime is 145421504017. The reversal of 145421504007 is 700405124541.

It is not a de Polignac number, because 145421504007 - 2³ = 145421503999 is a prime.

It is a super-2 number, since 2×145421504007² (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 (145421504017) 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, 767382 + ... + 937932.

It is an arithmetic number, because the mean of its divisors is an integer number (13051321248).

Almost surely, 2^145421504007 is an apocalyptic number.

145421504007 is a deficient number, since it is larger than the sum of its proper divisors (63399635961).

145421504007 is a wasteful number, since it uses less digits than its factorization.

145421504007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192430.

The product of its (nonzero) digits is 22400, while the sum is 33.

Adding to 145421504007 its reverse (700405124541), we get a palindrome (845826628548).

The spelling of 145421504007 in words is "one hundred forty-five billion, four hundred twenty-one million, five hundred four thousand, seven".