145473494584321 has 16 divisors (see below), whose sum is σ = 156143320333776. Its totient is φ = 135051128948736.

The previous prime is 145473494584309. The next prime is 145473494584441. The reversal of 145473494584321 is 123485494374541.

It can be written as a sum of positive squares in 8 ways, for example, as 26011238400 + 145447483345921 = 161280^2 + 12060161^2 .

It is a de Polignac number, because none of the positive numbers 2^k-145473494584321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145473494534321) 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, 198557226 + ... + 199288531.

It is an arithmetic number, because the mean of its divisors is an integer number (9758957520861).

Almost surely, 2^{145473494584321} is an apocalyptic number.

It is an amenable number.

145473494584321 is a deficient number, since it is larger than the sum of its proper divisors (10669825749455).

145473494584321 is a wasteful number, since it uses less digits than its factorization.

145473494584321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397846068.

The product of its digits is 232243200, while the sum is 64.

The spelling of 145473494584321 in words is "one hundred forty-five trillion, four hundred seventy-three billion, four hundred ninety-four million, five hundred eighty-four thousand, three hundred twenty-one".