10639202340 has 288 divisors, whose sum is σ = 33458818176. Its totient is φ = 2523156480.

The previous prime is 10639202339. The next prime is 10639202347. The reversal of 10639202340 is 4320293601.

It is a super-2 number, since 2×10639202340² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 10639202298 and 10639202307.

It is not an unprimeable number, because it can be changed into a prime (10639202347) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 65271099 + ... + 65271261.

It is an arithmetic number, because the mean of its divisors is an integer number (116176452).

Almost surely, 2^10639202340 is an apocalyptic number.

10639202340 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 10639202340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16729409088).

10639202340 is an abundant number, since it is smaller than the sum of its proper divisors (22819615836).

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

10639202340 is a wasteful number, since it uses less digits than its factorization.

10639202340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 10639202340 its reverse (4320293601), we get a palindrome (14959495941).

The spelling of 10639202340 in words is "ten billion, six hundred thirty-nine million, two hundred two thousand, three hundred forty".