18643821300126 has 24 divisors (see below), whose sum is σ = 44067213982584. Its totient is φ = 5649642818160.

The previous prime is 18643821300113. The next prime is 18643821300157. The reversal of 18643821300126 is 62100312834681.

18643821300126 is a `hidden beast` number, since 1 + 86 + 438 + 2 + 13 + 0 + 0 + 126 = 666.

It is a super-3 number, since 3×18643821300126³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47080356621 + ... + 47080357016.

It is an arithmetic number, because the mean of its divisors is an integer number (1836133915941).

Almost surely, 2^{18643821300126} is an apocalyptic number.

18643821300126 is an abundant number, since it is smaller than the sum of its proper divisors (25423392682458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18643821300126 is a wasteful number, since it uses less digits than its factorization.

18643821300126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94160713656 (or 94160713653 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 18643821300126 in words is "eighteen trillion, six hundred forty-three billion, eight hundred twenty-one million, three hundred thousand, one hundred twenty-six".