18631142861002 has 8 divisors (see below), whose sum is σ = 31939102047456. Its totient is φ = 7984775511852.

The previous prime is 18631142860949. The next prime is 18631142861041. The reversal of 18631142861002 is 20016824113681.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18631142861002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665397959308 + ... + 665397959335.

It is an arithmetic number, because the mean of its divisors is an integer number (3992387755932).

Almost surely, 2^{18631142861002} is an apocalyptic number.

18631142861002 is a deficient number, since it is larger than the sum of its proper divisors (13307959186454).

18631142861002 is a wasteful number, since it uses less digits than its factorization.

18631142861002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330795918652.

The product of its (nonzero) digits is 110592, while the sum is 43.

Adding to 18631142861002 its reverse (20016824113681), we get a palindrome (38647966974683).

The spelling of 18631142861002 in words is "eighteen trillion, six hundred thirty-one billion, one hundred forty-two million, eight hundred sixty-one thousand, two".