145253421512 has 16 divisors (see below), whose sum is σ = 272354473500. Its totient is φ = 72625561920.

The previous prime is 145253421503. The next prime is 145253421601. The reversal of 145253421512 is 215124352541.

It can be written as a sum of positive squares in 2 ways, for example, as 145141188676 + 112232836 = 380974^2 + 10594^2 .

It is a super-2 number, since 2×145253421512² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654962 + ... + 848222.

Almost surely, 2^145253421512 is an apocalyptic number.

It is an amenable number.

145253421512 is a deficient number, since it is larger than the sum of its proper divisors (127101051988).

145253421512 is a wasteful number, since it uses less digits than its factorization.

145253421512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287216 (or 287212 counting only the distinct ones).

The product of its digits is 48000, while the sum is 35.

The spelling of 145253421512 in words is "one hundred forty-five billion, two hundred fifty-three million, four hundred twenty-one thousand, five hundred twelve".