2056321501215 has 32 divisors (see below), whose sum is σ = 3336666048000. Its totient is φ = 1081189549440.

The previous prime is 2056321501211. The next prime is 2056321501261. The reversal of 2056321501215 is 5121051236502.

It is not a de Polignac number, because 2056321501215 - 2² = 2056321501211 is a prime.

It is a super-2 number, since 2×2056321501215² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056321501211) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 19691961 + ... + 19796109.

It is an arithmetic number, because the mean of its divisors is an integer number (104270814000).

Almost surely, 2^{2056321501215} is an apocalyptic number.

2056321501215 is a deficient number, since it is larger than the sum of its proper divisors (1280344546785).

2056321501215 is a wasteful number, since it uses less digits than its factorization.

2056321501215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122767.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 2056321501215 its reverse (5121051236502), we get a palindrome (7177372737717).

The spelling of 2056321501215 in words is "two trillion, fifty-six billion, three hundred twenty-one million, five hundred one thousand, two hundred fifteen".