13550423040 has 1408 divisors, whose sum is σ = 64141516800. Its totient is φ = 2627665920.

The previous prime is 13550422987. The next prime is 13550423041. The reversal of 13550423040 is 4032405531.

13550423040 is a `hidden beast` number, since 1 + 3 + 550 + 42 + 30 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (1408).

It is a super-2 number, since 2×13550423040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13550422995 and 13550423013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550423041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 202245087 + ... + 202245153.

Almost surely, 2^13550423040 is an apocalyptic number.

13550423040 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 13550423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32070758400).

13550423040 is an abundant number, since it is smaller than the sum of its proper divisors (50591093760).

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

13550423040 is a wasteful number, since it uses less digits than its factorization.

13550423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 13550423040 its reverse (4032405531), we get a palindrome (17582828571).

The spelling of 13550423040 in words is "thirteen billion, five hundred fifty million, four hundred twenty-three thousand, forty".