18270380249501 has 16 divisors (see below), whose sum is σ = 18510187651200. Its totient is φ = 18031046681088.

The previous prime is 18270380249467. The next prime is 18270380249533. The reversal of 18270380249501 is 10594208307281.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18270380249501 is a prime.

It is a super-2 number, since 2×18270380249501² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18270380249501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18270380249551) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 863061845 + ... + 863083013.

It is an arithmetic number, because the mean of its divisors is an integer number (1156886728200).

Almost surely, 2^{18270380249501} is an apocalyptic number.

It is an amenable number.

18270380249501 is a deficient number, since it is larger than the sum of its proper divisors (239807401699).

18270380249501 is a wasteful number, since it uses less digits than its factorization.

18270380249501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31828.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 18270380249501 in words is "eighteen trillion, two hundred seventy billion, three hundred eighty million, two hundred forty-nine thousand, five hundred one".