18277211752 has 16 divisors (see below), whose sum is σ = 35195982660. Its totient is φ = 8891616384.

The previous prime is 18277211657. The next prime is 18277211759. The reversal of 18277211752 is 25711277281.

It can be written as a sum of positive squares in 2 ways, for example, as 14906944836 + 3370266916 = 122094^2 + 58054^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18277211699 and 18277211708.

It is not an unprimeable number, because it can be changed into a prime (18277211759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30873373 + ... + 30873964.

Almost surely, 2^18277211752 is an apocalyptic number.

It is an amenable number.

18277211752 is a deficient number, since it is larger than the sum of its proper divisors (16918770908).

18277211752 is a wasteful number, since it uses less digits than its factorization.

18277211752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61747380 (or 61747376 counting only the distinct ones).

The product of its digits is 109760, while the sum is 43.

The spelling of 18277211752 in words is "eighteen billion, two hundred seventy-seven million, two hundred eleven thousand, seven hundred fifty-two".