13440155454 has 24 divisors (see below), whose sum is σ = 31767640632. Its totient is φ = 4072774320.

The previous prime is 13440155453. The next prime is 13440155497. The reversal of 13440155454 is 45455104431.

13440155454 is a `hidden beast` number, since 13 + 4 + 40 + 1 + 554 + 54 = 666.

It is a super-2 number, since 2×13440155454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440155453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33939589 + ... + 33939984.

It is an arithmetic number, because the mean of its divisors is an integer number (1323651693).

Almost surely, 2^13440155454 is an apocalyptic number.

13440155454 is an abundant number, since it is smaller than the sum of its proper divisors (18327485178).

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

13440155454 is a wasteful number, since it uses less digits than its factorization.

13440155454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67879592 (or 67879589 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 13440155454 its reverse (45455104431), we get a palindrome (58895259885).

The spelling of 13440155454 in words is "thirteen billion, four hundred forty million, one hundred fifty-five thousand, four hundred fifty-four".