18046818151657 has 8 divisors (see below), whose sum is σ = 18884164997120. Its totient is φ = 17225420770080.

The previous prime is 18046818151631. The next prime is 18046818151759. The reversal of 18046818151657 is 75615181864081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18046818151657 - 2¹⁹ = 18046817627369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18046818151595 and 18046818151604.

It is not an unprimeable number, because it can be changed into a prime (18046818151057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987363657 + ... + 3987368182.

It is an arithmetic number, because the mean of its divisors is an integer number (2360520624640).

Almost surely, 2^{18046818151657} is an apocalyptic number.

It is an amenable number.

18046818151657 is a deficient number, since it is larger than the sum of its proper divisors (837346845463).

18046818151657 is an equidigital number, since it uses as much as digits as its factorization.

18046818151657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7974731943.

The product of its (nonzero) digits is 12902400, while the sum is 61.

The spelling of 18046818151657 in words is "eighteen trillion, forty-six billion, eight hundred eighteen million, one hundred fifty-one thousand, six hundred fifty-seven".