18298302157821 has 32 divisors (see below), whose sum is σ = 28659516497920. Its totient is φ = 10167207511104.

The previous prime is 18298302157763. The next prime is 18298302157829. The reversal of 18298302157821 is 12875120389281.

It is not a de Polignac number, because 18298302157821 - 2⁷ = 18298302157693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18298302157829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45233386 + ... + 45636123.

It is an arithmetic number, because the mean of its divisors is an integer number (895609890560).

Almost surely, 2^{18298302157821} is an apocalyptic number.

It is an amenable number.

18298302157821 is a deficient number, since it is larger than the sum of its proper divisors (10361214340099).

18298302157821 is a wasteful number, since it uses less digits than its factorization.

18298302157821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90869785.

The product of its (nonzero) digits is 3870720, while the sum is 57.

The spelling of 18298302157821 in words is "eighteen trillion, two hundred ninety-eight billion, three hundred two million, one hundred fifty-seven thousand, eight hundred twenty-one".