10639989360 has 1920 divisors, whose sum is σ = 54146534400. Its totient is φ = 1881169920.

The previous prime is 10639989319. The next prime is 10639989403. The reversal of 10639989360 is 6398993601.

10639989360 is a `hidden beast` number, since 106 + 399 + 8 + 93 + 60 = 666.

It is a super-2 number, since 2×10639989360² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 10639989297 and 10639989306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 287567262 + ... + 287567298.

It is an arithmetic number, because the mean of its divisors is an integer number (28201320).

Almost surely, 2^10639989360 is an apocalyptic number.

10639989360 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 10639989360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27073267200).

10639989360 is an abundant number, since it is smaller than the sum of its proper divisors (43506545040).

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

10639989360 is a wasteful number, since it uses less digits than its factorization.

10639989360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

It can be divided in two parts, 10639 and 989360, that added together give a palindrome (999999).

The spelling of 10639989360 in words is "ten billion, six hundred thirty-nine million, nine hundred eighty-nine thousand, three hundred sixty".