2120863015 has 16 divisors (see below), whose sum is σ = 2601446400. Its totient is φ = 1659146400.

The previous prime is 2120863007. The next prime is 2120863021. The reversal of 2120863015 is 5103680212.

It is not a de Polignac number, because 2120863015 - 2³ = 2120863007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325540 + ... + 331990.

It is an arithmetic number, because the mean of its divisors is an integer number (162590400).

Almost surely, 2^2120863015 is an apocalyptic number.

2120863015 is a deficient number, since it is larger than the sum of its proper divisors (480583385).

2120863015 is a wasteful number, since it uses less digits than its factorization.

2120863015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7902.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2120863015 is about 46052.8285233383. The cubic root of 2120863015 is about 1284.8059511065.

The spelling of 2120863015 in words is "two billion, one hundred twenty million, eight hundred sixty-three thousand, fifteen".