13805047040 has 36 divisors (see below), whose sum is σ = 33067404804. Its totient is φ = 5522018304.

The previous prime is 13805047033. The next prime is 13805047099. The reversal of 13805047040 is 4074050831.

It can be written as a sum of positive squares in 2 ways, for example, as 2361182464 + 11443864576 = 48592^2 + 106976^2 .

It is a super-2 number, since 2×13805047040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 13805046988 and 13805047006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5391317 + ... + 5393876.

Almost surely, 2^13805047040 is an apocalyptic number.

13805047040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13805047040 is an abundant number, since it is smaller than the sum of its proper divisors (19262357764).

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

13805047040 is an equidigital number, since it uses as much as digits as its factorization.

13805047040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785214 (or 10785200 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 13805047040 its reverse (4074050831), we get a palindrome (17879097871).

The spelling of 13805047040 in words is "thirteen billion, eight hundred five million, forty-seven thousand, forty".