10639540736 has 80 divisors (see below), whose sum is σ = 23417304768. Its totient is φ = 4788940800.

The previous prime is 10639540699. The next prime is 10639540757. The reversal of 10639540736 is 63704593601.

It is a happy number.

It is a super-2 number, since 2×10639540736² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570926 + ... + 589266.

Almost surely, 2^10639540736 is an apocalyptic number.

10639540736 is a gapful number since it is divisible by the number (16) 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 10639540736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11708652384).

10639540736 is an abundant number, since it is smaller than the sum of its proper divisors (12777764032).

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

10639540736 is a wasteful number, since it uses less digits than its factorization.

10639540736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18473 (or 18457 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 10639540736 in words is "ten billion, six hundred thirty-nine million, five hundred forty thousand, seven hundred thirty-six".