145447213621174 has 16 divisors (see below), whose sum is σ = 218232438081840. Its totient is φ = 72703068389920.

The previous prime is 145447213621141. The next prime is 145447213621243. The reversal of 145447213621174 is 471126312744541.

It is a super-2 number, since 2×145447213621174² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 430327857 + ... + 430665715.

It is an arithmetic number, because the mean of its divisors is an integer number (13639527380115).

Almost surely, 2^{145447213621174} is an apocalyptic number.

145447213621174 is a deficient number, since it is larger than the sum of its proper divisors (72785224460666).

145447213621174 is a wasteful number, since it uses less digits than its factorization.

145447213621174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398015.

The product of its digits is 4515840, while the sum is 52.

The spelling of 145447213621174 in words is "one hundred forty-five trillion, four hundred forty-seven billion, two hundred thirteen million, six hundred twenty-one thousand, one hundred seventy-four".