18137258779672 has 16 divisors (see below), whose sum is σ = 34008072424560. Its totient is φ = 9068439466464.

The previous prime is 18137258779657. The next prime is 18137258779681. The reversal of 18137258779672 is 27697785273181.

It is a junction number, because it is equal to n+sod(n) for n = 18137258779595 and 18137258779604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23334148 + ... + 24098899.

It is an arithmetic number, because the mean of its divisors is an integer number (2125504526535).

Almost surely, 2^{18137258779672} is an apocalyptic number.

It is an amenable number.

18137258779672 is a deficient number, since it is larger than the sum of its proper divisors (15870813644888).

18137258779672 is a wasteful number, since it uses less digits than its factorization.

18137258779672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47480850 (or 47480846 counting only the distinct ones).

The product of its digits is 497871360, while the sum is 73.

The spelling of 18137258779672 in words is "eighteen trillion, one hundred thirty-seven billion, two hundred fifty-eight million, seven hundred seventy-nine thousand, six hundred seventy-two".