102505004436 has 12 divisors (see below), whose sum is σ = 239178343712. Its totient is φ = 34168334808.

The previous prime is 102505004311. The next prime is 102505004443. The reversal of 102505004436 is 634400505201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4271041840 + ... + 4271041863.

Almost surely, 2^102505004436 is an apocalyptic number.

It is an amenable number.

102505004436 is an abundant number, since it is smaller than the sum of its proper divisors (136673339276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102505004436 is a wasteful number, since it uses less digits than its factorization.

102505004436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542083710 (or 8542083708 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 102505004436 its reverse (634400505201), we get a palindrome (736905509637).

The spelling of 102505004436 in words is "one hundred two billion, five hundred five million, four thousand, four hundred thirty-six".