18642311582734 has 16 divisors (see below), whose sum is σ = 31959638287488. Its totient is φ = 7989214641912.

The previous prime is 18642311582723. The next prime is 18642311582759. The reversal of 18642311582734 is 43728511324681.

It is a super-2 number, since 2×18642311582734² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28621872 + ... + 29265955.

It is an arithmetic number, because the mean of its divisors is an integer number (1997477392968).

Almost surely, 2^{18642311582734} is an apocalyptic number.

18642311582734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18642311582734 is a deficient number, since it is larger than the sum of its proper divisors (13317326704754).

18642311582734 is a wasteful number, since it uses less digits than its factorization.

18642311582734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57910839.

The product of its digits is 7741440, while the sum is 55.

The spelling of 18642311582734 in words is "eighteen trillion, six hundred forty-two billion, three hundred eleven million, five hundred eighty-two thousand, seven hundred thirty-four".