15552420424 has 8 divisors (see below), whose sum is σ = 29160788310. Its totient is φ = 7776210208.

The previous prime is 15552420383. The next prime is 15552420451. The reversal of 15552420424 is 42402425551.

It can be written as a sum of positive squares in only one way, i.e., 11865744900 + 3686675524 = 108930^2 + 60718^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 15552420424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972026269 + ... + 972026284.

Almost surely, 2^15552420424 is an apocalyptic number.

It is an amenable number.

15552420424 is a deficient number, since it is larger than the sum of its proper divisors (13608367886).

15552420424 is a wasteful number, since it uses less digits than its factorization.

15552420424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944052559 (or 1944052555 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 15552420424 its reverse (42402425551), we get a palindrome (57954845975).

The spelling of 15552420424 in words is "fifteen billion, five hundred fifty-two million, four hundred twenty thousand, four hundred twenty-four".