15724485484421 has 12 divisors (see below), whose sum is σ = 18292280843232. Its totient is φ = 13477738103928.

The previous prime is 15724485484373. The next prime is 15724485484453. The reversal of 15724485484421 is 12448458442751.

It is not a de Polignac number, because 15724485484421 - 2³⁴ = 15707305615237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15724485484921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2963465 + ... + 6342798.

It is an arithmetic number, because the mean of its divisors is an integer number (1524356736936).

Almost surely, 2^{15724485484421} is an apocalyptic number.

It is an amenable number.

15724485484421 is a deficient number, since it is larger than the sum of its proper divisors (2567795358811).

15724485484421 is an equidigital number, since it uses as much as digits as its factorization.

15724485484421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340760 (or 9340753 counting only the distinct ones).

The product of its digits is 45875200, while the sum is 59.

The spelling of 15724485484421 in words is "fifteen trillion, seven hundred twenty-four billion, four hundred eighty-five million, four hundred eighty-four thousand, four hundred twenty-one".