4081724726642 has 16 divisors (see below), whose sum is σ = 6149171608632. Its totient is φ = 2032001733120.

The previous prime is 4081724726641. The next prime is 4081724726663. The reversal of 4081724726642 is 2466274271804.

It can be written as a sum of positive squares in 4 ways, for example, as 2754507828241 + 1327216898401 = 1659671^2 + 1152049^2 .

It is not an unprimeable number, because it can be changed into a prime (4081724726641) 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, 9585542 + ... + 10002302.

Almost surely, 2^{4081724726642} is an apocalyptic number.

4081724726642 is a deficient number, since it is larger than the sum of its proper divisors (2067446881990).

4081724726642 is a wasteful number, since it uses less digits than its factorization.

4081724726642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438013.

The product of its (nonzero) digits is 7225344, while the sum is 53.

The spelling of 4081724726642 in words is "four trillion, eighty-one billion, seven hundred twenty-four million, seven hundred twenty-six thousand, six hundred forty-two".