145523215015504 has 20 divisors (see below), whose sum is σ = 286573380391060. Its totient is φ = 71568794269440.

The previous prime is 145523215015501. The next prime is 145523215015559. The reversal of 145523215015504 is 405510512325541.

It can be written as a sum of positive squares in 2 ways, for example, as 20449858711104 + 125073356304400 = 4522152^2 + 11183620^2 .

It is a super-2 number, since 2×145523215015504² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145523215015501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74550826389 + ... + 74550828340.

It is an arithmetic number, because the mean of its divisors is an integer number (14328669019553).

Almost surely, 2^{145523215015504} is an apocalyptic number.

It is an amenable number.

145523215015504 is a deficient number, since it is larger than the sum of its proper divisors (141050165375556).

145523215015504 is a wasteful number, since it uses less digits than its factorization.

145523215015504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149101654798 (or 149101654792 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 43.

The spelling of 145523215015504 in words is "one hundred forty-five trillion, five hundred twenty-three billion, two hundred fifteen million, fifteen thousand, five hundred four".