18653140122121 has 8 divisors (see below), whose sum is σ = 19414734382080. Its totient is φ = 17899438030992.

The previous prime is 18653140122079. The next prime is 18653140122137. The reversal of 18653140122121 is 12122104135681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18653140122121 - 2¹³ = 18653140113929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18653140122151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1973037385 + ... + 1973046838.

It is an arithmetic number, because the mean of its divisors is an integer number (2426841797760).

Almost surely, 2^{18653140122121} is an apocalyptic number.

It is an amenable number.

18653140122121 is a deficient number, since it is larger than the sum of its proper divisors (761594259959).

18653140122121 is a wasteful number, since it uses less digits than its factorization.

18653140122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946084415.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 18653140122121 in words is "eighteen trillion, six hundred fifty-three billion, one hundred forty million, one hundred twenty-two thousand, one hundred twenty-one".