15431028081 has 16 divisors (see below), whose sum is σ = 24149460864. Its totient is φ = 8579412864.

The previous prime is 15431028079. The next prime is 15431028101. The reversal of 15431028081 is 18082013451.

It is not a de Polignac number, because 15431028081 - 2¹ = 15431028079 is a prime.

It is a super-2 number, since 2×15431028081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15431028001) 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 15 ways as a sum of consecutive naturals, for example, 9929100 + ... + 9930653.

It is an arithmetic number, because the mean of its divisors is an integer number (1509341304).

Almost surely, 2^15431028081 is an apocalyptic number.

It is an amenable number.

15431028081 is a deficient number, since it is larger than the sum of its proper divisors (8718432783).

15431028081 is a wasteful number, since it uses less digits than its factorization.

15431028081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19859800.

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 15431028081 in words is "fifteen billion, four hundred thirty-one million, twenty-eight thousand, eighty-one".