40025543642 has 8 divisors (see below), whose sum is σ = 68615217696. Its totient is φ = 17153804412.

The previous prime is 40025543641. The next prime is 40025543681. The reversal of 40025543642 is 24634552004.

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

It is not an unprimeable number, because it can be changed into a prime (40025543641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1429483688 + ... + 1429483715.

It is an arithmetic number, because the mean of its divisors is an integer number (8576902212).

Almost surely, 2^40025543642 is an apocalyptic number.

40025543642 is a deficient number, since it is larger than the sum of its proper divisors (28589674054).

40025543642 is a wasteful number, since it uses less digits than its factorization.

40025543642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858967412.

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 40025543642 in words is "forty billion, twenty-five million, five hundred forty-three thousand, six hundred forty-two".