18122141757640 has 32 divisors (see below), whose sum is σ = 40775015736000. Its totient is φ = 7248821719744.

The previous prime is 18122141757637. The next prime is 18122141757653. The reversal of 18122141757640 is 4675714122181.

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, 8293821 + ... + 10248499.

It is an arithmetic number, because the mean of its divisors is an integer number (1274219241750).

Almost surely, 2^{18122141757640} is an apocalyptic number.

18122141757640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18122141757640 is an abundant number, since it is smaller than the sum of its proper divisors (22652873978360).

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

18122141757640 is a wasteful number, since it uses less digits than its factorization.

18122141757640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186469 (or 2186465 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 18122141757640 in words is "eighteen trillion, one hundred twenty-two billion, one hundred forty-one million, seven hundred fifty-seven thousand, six hundred forty".