15420456530 has 32 divisors (see below), whose sum is σ = 28759924800. Its totient is φ = 5949216832.

The previous prime is 15420456529. The next prime is 15420456593. The reversal of 15420456530 is 3565402451.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215300 + ... + 277839.

It is an arithmetic number, because the mean of its divisors is an integer number (898747650).

Almost surely, 2^15420456530 is an apocalyptic number.

15420456530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15420456530 is a deficient number, since it is larger than the sum of its proper divisors (13339468270).

15420456530 is a wasteful number, since it uses less digits than its factorization.

15420456530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493258.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 15420456530 its reverse (3565402451), we get a palindrome (18985858981).

The spelling of 15420456530 in words is "fifteen billion, four hundred twenty million, four hundred fifty-six thousand, five hundred thirty".