13404451056 has 40 divisors (see below), whose sum is σ = 36450702720. Its totient is φ = 4232984256.

The previous prime is 13404451051. The next prime is 13404451069. The reversal of 13404451056 is 65015440431.

It is a super-2 number, since 2×13404451056² (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 (13404451051) 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, 7348020 + ... + 7349843.

It is an arithmetic number, because the mean of its divisors is an integer number (911267568).

Almost surely, 2^13404451056 is an apocalyptic number.

13404451056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13404451056 is an abundant number, since it is smaller than the sum of its proper divisors (23046251664).

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

13404451056 is a wasteful number, since it uses less digits than its factorization.

13404451056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14697893 (or 14697887 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 13404451056 its reverse (65015440431), we get a palindrome (78419891487).

The spelling of 13404451056 in words is "thirteen billion, four hundred four million, four hundred fifty-one thousand, fifty-six".