18115530486837 has 24 divisors (see below), whose sum is σ = 28120419900000. Its totient is φ = 10343308713696.

The previous prime is 18115530486803. The next prime is 18115530486839. The reversal of 18115530486837 is 73868403551181.

It is not a de Polignac number, because 18115530486837 - 2¹² = 18115530482741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18115530486839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49955587 + ... + 50316912.

It is an arithmetic number, because the mean of its divisors is an integer number (1171684162500).

Almost surely, 2^{18115530486837} is an apocalyptic number.

It is an amenable number.

18115530486837 is a deficient number, since it is larger than the sum of its proper divisors (10004889413163).

18115530486837 is a wasteful number, since it uses less digits than its factorization.

18115530486837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100273745 (or 100273738 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 60.

The spelling of 18115530486837 in words is "eighteen trillion, one hundred fifteen billion, five hundred thirty million, four hundred eighty-six thousand, eight hundred thirty-seven".