102805485630 has 64 divisors (see below), whose sum is σ = 252078205248. Its totient is φ = 26825564160.

The previous prime is 102805485593. The next prime is 102805485661. The reversal of 102805485630 is 36584508201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207652 + ... + 498728.

It is an arithmetic number, because the mean of its divisors is an integer number (3938721957).

Almost surely, 2^102805485630 is an apocalyptic number.

102805485630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102805485630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126039102624).

102805485630 is an abundant number, since it is smaller than the sum of its proper divisors (149272719618).

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

102805485630 is a wasteful number, since it uses less digits than its factorization.

102805485630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291341.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 102805485630 in words is "one hundred two billion, eight hundred five million, four hundred eighty-five thousand, six hundred thirty".