5181540451815 has 32 divisors (see below), whose sum is σ = 10203648892416. Its totient is φ = 2186496190080.

The previous prime is 5181540451799. The next prime is 5181540451823.

5181540451815 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5181540451815 - 2⁴ = 5181540451799 is a prime.

It is a super-2 number, since 2×5181540451815² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1897998801 + ... + 1898001530.

It is an arithmetic number, because the mean of its divisors is an integer number (318864027888).

Almost surely, 2^{5181540451815} is an apocalyptic number.

5181540451815 is a deficient number, since it is larger than the sum of its proper divisors (5022108440601).

5181540451815 is a wasteful number, since it uses less digits than its factorization.

5181540451815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796000359.

The product of its (nonzero) digits is 640000, while the sum is 48.

The spelling of 5181540451815 in words is "five trillion, one hundred eighty-one billion, five hundred forty million, four hundred fifty-one thousand, eight hundred fifteen".