18026155977 has 8 divisors (see below), whose sum is σ = 24062159520. Its totient is φ = 12003794880.

The previous prime is 18026155937. The next prime is 18026156017. The reversal of 18026155977 is 77955162081.

It is an interprime number because it is at equal distance from previous prime (18026155937) and next prime (18026156017).

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

It is not a de Polignac number, because 18026155977 - 2¹⁵ = 18026123209 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18026155937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3407527 + ... + 3412812.

It is an arithmetic number, because the mean of its divisors is an integer number (3007769940).

Almost surely, 2^18026155977 is an apocalyptic number.

It is an amenable number.

18026155977 is a deficient number, since it is larger than the sum of its proper divisors (6036003543).

18026155977 is an equidigital number, since it uses as much as digits as its factorization.

18026155977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821223.

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 18026155977 in words is "eighteen billion, twenty-six million, one hundred fifty-five thousand, nine hundred seventy-seven".