4143915121545 has 40 divisors (see below), whose sum is σ = 7568509166856. Its totient is φ = 2168388278784.

The previous prime is 4143915121543. The next prime is 4143915121547. The reversal of 4143915121545 is 5451215193414.

4143915121545 is a `hidden beast` number, since 4 + 1 + 4 + 3 + 91 + 5 + 12 + 1 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (4143915121543) and next prime (4143915121547).

It can be written as a sum of positive squares in 4 ways, for example, as 268859879289 + 3875055242256 = 518517^2 + 1968516^2 .

It is not a de Polignac number, because 4143915121545 - 2¹ = 4143915121543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4143915121545.

It is not an unprimeable number, because it can be changed into a prime (4143915121543) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 96505792 + ... + 96548721.

Almost surely, 2^{4143915121545} is an apocalyptic number.

4143915121545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4143915121545 is a deficient number, since it is larger than the sum of its proper divisors (3424594045311).

4143915121545 is a wasteful number, since it uses less digits than its factorization.

4143915121545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193054583 (or 193054574 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The spelling of 4143915121545 in words is "four trillion, one hundred forty-three billion, nine hundred fifteen million, one hundred twenty-one thousand, five hundred forty-five".