2155140330198 has 8 divisors (see below), whose sum is σ = 4310280660408. Its totient is φ = 718380110064.

The previous prime is 2155140330197. The next prime is 2155140330257. The reversal of 2155140330198 is 8910330415512.

It is a happy number.

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

2155140330198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155140330197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179595027511 + ... + 179595027522.

It is an arithmetic number, because the mean of its divisors is an integer number (538785082551).

Almost surely, 2^{2155140330198} is an apocalyptic number.

2155140330198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2155140330198 is a wasteful number, since it uses less digits than its factorization.

2155140330198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359190055038.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 2155140330198 in words is "two trillion, one hundred fifty-five billion, one hundred forty million, three hundred thirty thousand, one hundred ninety-eight".