15454251481 has 16 divisors (see below), whose sum is σ = 15647074560. Its totient is φ = 15263136000.

The previous prime is 15454251457. The next prime is 15454251487. The reversal of 15454251481 is 18415245451.

15454251481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15454251481 - 2⁹ = 15454250969 is a prime.

It is a super-2 number, since 2×15454251481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15454251487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20577856 + ... + 20578606.

It is an arithmetic number, because the mean of its divisors is an integer number (977942160).

Almost surely, 2^15454251481 is an apocalyptic number.

It is an amenable number.

15454251481 is a deficient number, since it is larger than the sum of its proper divisors (192823079).

15454251481 is a wasteful number, since it uses less digits than its factorization.

15454251481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its digits is 128000, while the sum is 40.

The spelling of 15454251481 in words is "fifteen billion, four hundred fifty-four million, two hundred fifty-one thousand, four hundred eighty-one".