2155140330207 has 8 divisors (see below), whose sum is σ = 2873651780784. Its totient is φ = 1436694549888.

The previous prime is 2155140330197. The next prime is 2155140330257. The reversal of 2155140330207 is 7020330415512.

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

It is not a de Polignac number, because 2155140330207 - 2⁶ = 2155140330143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155140330257) 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, 16340938 + ... + 16472295.

It is an arithmetic number, because the mean of its divisors is an integer number (359206472598).

Almost surely, 2^{2155140330207} is an apocalyptic number.

2155140330207 is a deficient number, since it is larger than the sum of its proper divisors (718511450577).

2155140330207 is a wasteful number, since it uses less digits than its factorization.

2155140330207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32835129.

The product of its (nonzero) digits is 25200, while the sum is 33.

Adding to 2155140330207 its reverse (7020330415512), we get a palindrome (9175470745719).

The spelling of 2155140330207 in words is "two trillion, one hundred fifty-five billion, one hundred forty million, three hundred thirty thousand, two hundred seven".