40218631001 has 4 divisors (see below), whose sum is σ = 40345503972. Its totient is φ = 40091758032.

The previous prime is 40218630997. The next prime is 40218631031. The reversal of 40218631001 is 10013681204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7863255625 + 32355375376 = 88675^2 + 179876^2 .

It is a cyclic number.

It is not a de Polignac number, because 40218631001 - 2² = 40218630997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40218631031) 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, 63436010 + ... + 63436643.

It is an arithmetic number, because the mean of its divisors is an integer number (10086375993).

Almost surely, 2^40218631001 is an apocalyptic number.

It is an amenable number.

40218631001 is a deficient number, since it is larger than the sum of its proper divisors (126872971).

40218631001 is a wasteful number, since it uses less digits than its factorization.

40218631001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126872970.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 40218631001 in words is "forty billion, two hundred eighteen million, six hundred thirty-one thousand, one".