15421033544243 has 8 divisors (see below), whose sum is σ = 15514815828960. Its totient is φ = 15327268411840.

The previous prime is 15421033544197. The next prime is 15421033544299. The reversal of 15421033544243 is 34244533012451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15421033544243 - 2³⁰ = 15419959802419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15421033544243.

It is not an unprimeable number, because it can be changed into a prime (15421033144243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2482178 + ... + 6083031.

It is an arithmetic number, because the mean of its divisors is an integer number (1939351978620).

Almost surely, 2^{15421033544243} is an apocalyptic number.

15421033544243 is a deficient number, since it is larger than the sum of its proper divisors (93782284717).

15421033544243 is a wasteful number, since it uses less digits than its factorization.

15421033544243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8576157.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 15421033544243 its reverse (34244533012451), we get a palindrome (49665566556694).

The spelling of 15421033544243 in words is "fifteen trillion, four hundred twenty-one billion, thirty-three million, five hundred forty-four thousand, two hundred forty-three".