13555233040 has 40 divisors (see below), whose sum is σ = 32284605528. Its totient is φ = 5289845760.

The previous prime is 13555233031. The next prime is 13555233049. The reversal of 13555233040 is 4033255531.

It is an interprime number because it is at equal distance from previous prime (13555233031) and next prime (13555233049).

It can be written as a sum of positive squares in 4 ways, for example, as 1097994496 + 12457238544 = 33136^2 + 111612^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 13555232993 and 13555233011.

It is not an unprimeable number, because it can be changed into a prime (13555233049) 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, 2063067 + ... + 2069626.

Almost surely, 2^13555233040 is an apocalyptic number.

13555233040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13555233040 is an abundant number, since it is smaller than the sum of its proper divisors (18729372488).

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

13555233040 is a wasteful number, since it uses less digits than its factorization.

13555233040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132747 (or 4132741 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

Adding to 13555233040 its reverse (4033255531), we get a palindrome (17588488571).

The spelling of 13555233040 in words is "thirteen billion, five hundred fifty-five million, two hundred thirty-three thousand, forty".