10805620856640 has 56 divisors (see below), whose sum is σ = 34307846222880. Its totient is φ = 2881498894848.

The previous prime is 10805620856593. The next prime is 10805620856647. The reversal of 10805620856640 is 4665802650801.

It is a super-2 number, since 2×10805620856640² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10805620856647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5627926570 + ... + 5627928489.

Almost surely, 2^{10805620856640} is an apocalyptic number.

10805620856640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10805620856640 is an abundant number, since it is smaller than the sum of its proper divisors (23502225366240).

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

10805620856640 is a wasteful number, since it uses less digits than its factorization.

10805620856640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11255855079 (or 11255855069 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 10805620856640 in words is "ten trillion, eight hundred five billion, six hundred twenty million, eight hundred fifty-six thousand, six hundred forty".