2120542371255 has 64 divisors (see below), whose sum is σ = 4258459008000. Its totient is φ = 875349765120.

The previous prime is 2120542371239. The next prime is 2120542371301. The reversal of 2120542371255 is 5521732450212.

It is a happy number.

It is not a de Polignac number, because 2120542371255 - 2⁴ = 2120542371239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5988870 + ... + 6333059.

It is an arithmetic number, because the mean of its divisors is an integer number (66538422000).

Almost surely, 2^{2120542371255} is an apocalyptic number.

2120542371255 is an abundant number, since it is smaller than the sum of its proper divisors (2137916636745).

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

2120542371255 is a wasteful number, since it uses less digits than its factorization.

2120542371255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12322104.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 2120542371255 in words is "two trillion, one hundred twenty billion, five hundred forty-two million, three hundred seventy-one thousand, two hundred fifty-five".