5531321531615 has 64 divisors (see below), whose sum is σ = 7701973972992. Its totient is φ = 3774012211200.

The previous prime is 5531321531611. The next prime is 5531321531621. The reversal of 5531321531615 is 5161351231355.

It is not a de Polignac number, because 5531321531615 - 2² = 5531321531611 is a prime.

It is a super-2 number, since 2×5531321531615² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5531321531611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17174747 + ... + 17493843.

It is an arithmetic number, because the mean of its divisors is an integer number (120343343328).

Almost surely, 2^{5531321531615} is an apocalyptic number.

5531321531615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5531321531615 is a deficient number, since it is larger than the sum of its proper divisors (2170652441377).

5531321531615 is a wasteful number, since it uses less digits than its factorization.

5531321531615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319400.

The product of its digits is 202500, while the sum is 41.

The spelling of 5531321531615 in words is "five trillion, five hundred thirty-one billion, three hundred twenty-one million, five hundred thirty-one thousand, six hundred fifteen".