102439663480 has 128 divisors (see below), whose sum is σ = 289293120000. Its totient is φ = 31714813440.

The previous prime is 102439663441. The next prime is 102439663483. The reversal of 102439663480 is 84366934201.

It is a self number, because there is not a number n which added to its sum of digits gives 102439663480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102439663483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347311 + ... + 570529.

It is an arithmetic number, because the mean of its divisors is an integer number (2260102500).

Almost surely, 2^102439663480 is an apocalyptic number.

102439663480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102439663480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144646560000).

102439663480 is an abundant number, since it is smaller than the sum of its proper divisors (186853456520).

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

102439663480 is a wasteful number, since it uses less digits than its factorization.

102439663480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223397 (or 223393 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 102439663480 in words is "one hundred two billion, four hundred thirty-nine million, six hundred sixty-three thousand, four hundred eighty".