40578729428843 has 4 divisors (see below), whose sum is σ = 40642034779608. Its totient is φ = 40515424078080.

The previous prime is 40578729428767. The next prime is 40578729428911. The reversal of 40578729428843 is 34882492787504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40578729428843 - 2²⁸ = 40578460993387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40578729128843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31652674421 + ... + 31652675702.

It is an arithmetic number, because the mean of its divisors is an integer number (10160508694902).

Almost surely, 2^{40578729428843} is an apocalyptic number.

40578729428843 is a deficient number, since it is larger than the sum of its proper divisors (63305350765).

40578729428843 is an equidigital number, since it uses as much as digits as its factorization.

40578729428843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63305350764.

The product of its (nonzero) digits is 867041280, while the sum is 71.

The spelling of 40578729428843 in words is "forty trillion, five hundred seventy-eight billion, seven hundred twenty-nine million, four hundred twenty-eight thousand, eight hundred forty-three".