18703642057534 has 24 divisors (see below), whose sum is σ = 32638551340248. Its totient is φ = 8015206898160.

The previous prime is 18703642057519. The next prime is 18703642057567. The reversal of 18703642057534 is 43575024630781.

It is a super-2 number, since 2×18703642057534² (a number of 27 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 6380164 + ... + 8838199.

It is an arithmetic number, because the mean of its divisors is an integer number (1359939639177).

Almost surely, 2^{18703642057534} is an apocalyptic number.

18703642057534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18703642057534 is a deficient number, since it is larger than the sum of its proper divisors (13934909282714).

18703642057534 is a wasteful number, since it uses less digits than its factorization.

18703642057534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15230920 (or 15230913 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 18703642057534 in words is "eighteen trillion, seven hundred three billion, six hundred forty-two million, fifty-seven thousand, five hundred thirty-four".