102605204020306 has 8 divisors (see below), whose sum is σ = 165746868032844. Its totient is φ = 47356248009360.

The previous prime is 102605204020289. The next prime is 102605204020307. The reversal of 102605204020306 is 603020402506201.

It can be written as a sum of positive squares in 2 ways, for example, as 102591394245081 + 13809775225 = 10128741^2 + 117515^2 .

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 (102605204020307) 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, 1973177000365 + ... + 1973177000416.

Almost surely, 2^{102605204020306} is an apocalyptic number.

102605204020306 is a deficient number, since it is larger than the sum of its proper divisors (63141664012538).

102605204020306 is a wasteful number, since it uses less digits than its factorization.

102605204020306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946354000796.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 102605204020306 its reverse (603020402506201), we get a palindrome (705625606526507).

The spelling of 102605204020306 in words is "one hundred two trillion, six hundred five billion, two hundred four million, twenty thousand, three hundred six".