102238642690298 has 4 divisors (see below), whose sum is σ = 153357964035450. Its totient is φ = 51119321345148.

The previous prime is 102238642690273. The next prime is 102238642690339. The reversal of 102238642690298 is 892096246832201.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 83687678721409 + 18550963968889 = 9148097^2 + 4307083^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102238642690298.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25559660672573 + ... + 25559660672576.

Almost surely, 2^{102238642690298} is an apocalyptic number.

102238642690298 is a deficient number, since it is larger than the sum of its proper divisors (51119321345152).

102238642690298 is an equidigital number, since it uses as much as digits as its factorization.

102238642690298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51119321345151.

The product of its (nonzero) digits is 35831808, while the sum is 62.

The spelling of 102238642690298 in words is "one hundred two trillion, two hundred thirty-eight billion, six hundred forty-two million, six hundred ninety thousand, two hundred ninety-eight".