18273121077 has 8 divisors (see below), whose sum is σ = 24374796064. Its totient is φ = 12176763408.

The previous prime is 18273121043. The next prime is 18273121147. The reversal of 18273121077 is 77012137281.

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

It is not a de Polignac number, because 18273121077 - 2⁷ = 18273120949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18273121277) 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, 1321303 + ... + 1335060.

It is an arithmetic number, because the mean of its divisors is an integer number (3046849508).

Almost surely, 2^18273121077 is an apocalyptic number.

It is an amenable number.

18273121077 is a deficient number, since it is larger than the sum of its proper divisors (6101674987).

18273121077 is a wasteful number, since it uses less digits than its factorization.

18273121077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658659.

The product of its (nonzero) digits is 32928, while the sum is 39.

The spelling of 18273121077 in words is "eighteen billion, two hundred seventy-three million, one hundred twenty-one thousand, seventy-seven".