15420343512 has 48 divisors (see below), whose sum is σ = 44844879960. Its totient is φ = 4405812096.

The previous prime is 15420343511. The next prime is 15420343531. The reversal of 15420343512 is 21534302451.

It is a self number, because there is not a number n which added to its sum of digits gives 15420343512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15420343511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6555093 + ... + 6557444.

Almost surely, 2^15420343512 is an apocalyptic number.

15420343512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15420343512 is an abundant number, since it is smaller than the sum of its proper divisors (29424536448).

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

15420343512 is a wasteful number, since it uses less digits than its factorization.

15420343512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13112560 (or 13112549 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 15420343512 its reverse (21534302451), we get a palindrome (36954645963).

The spelling of 15420343512 in words is "fifteen billion, four hundred twenty million, three hundred forty-three thousand, five hundred twelve".