15531143104545 has 32 divisors (see below), whose sum is σ = 24982739390592. Its totient is φ = 8238987128832.

The previous prime is 15531143104517. The next prime is 15531143104579. The reversal of 15531143104545 is 54540134113551.

It is not a de Polignac number, because 15531143104545 - 2¹³ = 15531143096353 is a prime.

It is a super-2 number, since 2×15531143104545² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15531143104497 and 15531143104506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17080282 + ... + 17966588.

It is an arithmetic number, because the mean of its divisors is an integer number (780710605956).

Almost surely, 2^{15531143104545} is an apocalyptic number.

15531143104545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15531143104545 is a deficient number, since it is larger than the sum of its proper divisors (9451596286047).

15531143104545 is a wasteful number, since it uses less digits than its factorization.

15531143104545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892561.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 15531143104545 in words is "fifteen trillion, five hundred thirty-one billion, one hundred forty-three million, one hundred four thousand, five hundred forty-five".