18701843354540 has 24 divisors (see below), whose sum is σ = 41584098753792. Its totient is φ = 7040693968640.

The previous prime is 18701843354497. The next prime is 18701843354573. The reversal of 18701843354540 is 4545334810781.

It is a super-2 number, since 2×18701843354540² (a number of 27 digits) contains 22 as substring.

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, 27502710476 + ... + 27502711155.

It is an arithmetic number, because the mean of its divisors is an integer number (1732670781408).

Almost surely, 2^{18701843354540} is an apocalyptic number.

18701843354540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18701843354540 is an abundant number, since it is smaller than the sum of its proper divisors (22882255399252).

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

18701843354540 is a wasteful number, since it uses less digits than its factorization.

18701843354540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55005421657 (or 55005421655 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 18701843354540 in words is "eighteen trillion, seven hundred one billion, eight hundred forty-three million, three hundred fifty-four thousand, five hundred forty".