18077320052 has 48 divisors (see below), whose sum is σ = 34774536384. Its totient is φ = 8154432000.

The previous prime is 18077320021. The next prime is 18077320061. The reversal of 18077320052 is 25002377081.

It is a super-4 number, since 4×18077320052⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18077319994 and 18077320021.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6317102 + ... + 6319962.

It is an arithmetic number, because the mean of its divisors is an integer number (724469508).

Almost surely, 2^18077320052 is an apocalyptic number.

It is an amenable number.

18077320052 is a deficient number, since it is larger than the sum of its proper divisors (16697216332).

18077320052 is a wasteful number, since it uses less digits than its factorization.

18077320052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920 (or 3918 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 18077320052 in words is "eighteen billion, seventy-seven million, three hundred twenty thousand, fifty-two".