18155248716 has 24 divisors (see below), whose sum is σ = 46213360704. Its totient is φ = 5501590480.

The previous prime is 18155248703. The next prime is 18155248729. The reversal of 18155248716 is 61784255181.

It is an interprime number because it is at equal distance from previous prime (18155248703) and next prime (18155248729).

It is a super-2 number, since 2×18155248716² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68769750 + ... + 68770013.

It is an arithmetic number, because the mean of its divisors is an integer number (1925556696).

Almost surely, 2^18155248716 is an apocalyptic number.

It is an amenable number.

18155248716 is an abundant number, since it is smaller than the sum of its proper divisors (28058111988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18155248716 is a wasteful number, since it uses less digits than its factorization.

18155248716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137539781 (or 137539779 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The spelling of 18155248716 in words is "eighteen billion, one hundred fifty-five million, two hundred forty-eight thousand, seven hundred sixteen".