40002544243 has 8 divisors (see below), whose sum is σ = 41342192640. Its totient is φ = 38665973640.

The previous prime is 40002544237. The next prime is 40002544247. The reversal of 40002544243 is 34244520004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40002544243 - 2²⁵ = 39968989811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40002544247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743005 + ... + 795022.

It is an arithmetic number, because the mean of its divisors is an integer number (5167774080).

Almost surely, 2^40002544243 is an apocalyptic number.

40002544243 is a deficient number, since it is larger than the sum of its proper divisors (1339648397).

40002544243 is a wasteful number, since it uses less digits than its factorization.

40002544243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538897.

The product of its (nonzero) digits is 15360, while the sum is 28.

The spelling of 40002544243 in words is "forty billion, two million, five hundred forty-four thousand, two hundred forty-three".