15420454305 has 16 divisors (see below), whose sum is σ = 25745454720. Its totient is φ = 7866666368.

The previous prime is 15420454303. The next prime is 15420454337. The reversal of 15420454305 is 50345402451.

15420454305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15420454305 - 2¹ = 15420454303 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15420454303) 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, 22348140 + ... + 22348829.

It is an arithmetic number, because the mean of its divisors is an integer number (1609090920).

Almost surely, 2^15420454305 is an apocalyptic number.

15420454305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15420454305 is a deficient number, since it is larger than the sum of its proper divisors (10325000415).

15420454305 is a wasteful number, since it uses less digits than its factorization.

15420454305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44697000.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 15420454305 its reverse (50345402451), we get a palindrome (65765856756).

The spelling of 15420454305 in words is "fifteen billion, four hundred twenty million, four hundred fifty-four thousand, three hundred five".