145455723272 has 16 divisors (see below), whose sum is σ = 288772392060. Its totient is φ = 68449752064.

The previous prime is 145455723209. The next prime is 145455723319. The reversal of 145455723272 is 272327554541.

It can be written as a sum of positive squares in 2 ways, for example, as 143454592516 + 2001130756 = 378754^2 + 44734^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534763553 + ... + 534763824.

Almost surely, 2^145455723272 is an apocalyptic number.

It is an amenable number.

145455723272 is a deficient number, since it is larger than the sum of its proper divisors (143316668788).

145455723272 is a wasteful number, since it uses less digits than its factorization.

145455723272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069527400 (or 1069527396 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 47.

The spelling of 145455723272 in words is "one hundred forty-five billion, four hundred fifty-five million, seven hundred twenty-three thousand, two hundred seventy-two".