15455784455 has 16 divisors (see below), whose sum is σ = 18816992064. Its totient is φ = 12184757760.

The previous prime is 15455784451. The next prime is 15455784497. The reversal of 15455784455 is 55448755451.

15455784455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15455784455 - 2² = 15455784451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15455784397 and 15455784406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15455784451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849029 + ... + 867041.

It is an arithmetic number, because the mean of its divisors is an integer number (1176062004).

Almost surely, 2^15455784455 is an apocalyptic number.

15455784455 is a deficient number, since it is larger than the sum of its proper divisors (3361207609).

15455784455 is a wasteful number, since it uses less digits than its factorization.

15455784455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20506.

The product of its digits is 11200000, while the sum is 53.

The spelling of 15455784455 in words is "fifteen billion, four hundred fifty-five million, seven hundred eighty-four thousand, four hundred fifty-five".