40143128645847 has 16 divisors (see below), whose sum is σ = 55251735818240. Its totient is φ = 25898334184800.

The previous prime is 40143128645833. The next prime is 40143128645849. The reversal of 40143128645847 is 74854682134104.

It is not a de Polignac number, because 40143128645847 - 2¹² = 40143128641751 is a prime.

It is a super-2 number, since 2×40143128645847² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143128645849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1500429 + ... + 9085017.

It is an arithmetic number, because the mean of its divisors is an integer number (3453233488640).

Almost surely, 2^{40143128645847} is an apocalyptic number.

40143128645847 is a deficient number, since it is larger than the sum of its proper divisors (15108607172393).

40143128645847 is a wasteful number, since it uses less digits than its factorization.

40143128645847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641534.

The product of its (nonzero) digits is 20643840, while the sum is 57.

The spelling of 40143128645847 in words is "forty trillion, one hundred forty-three billion, one hundred twenty-eight million, six hundred forty-five thousand, eight hundred forty-seven".