2961785928256 has 21 divisors (see below), whose sum is σ = 5877321272131. Its totient is φ = 1480886080192.

The previous prime is 2961785928223. The next prime is 2961785928259. The reversal of 2961785928256 is 6528295871692.

The square root of 2961785928256 is 1720984.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2961785928259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13660311 + ... + 13875433.

Almost surely, 2^{2961785928256} is an apocalyptic number.

2961785928256 is the 1720984-th square number.

It is an amenable number.

2961785928256 is a deficient number, since it is larger than the sum of its proper divisors (2915535343875).

2961785928256 is an frugal number, since it uses more digits than its factorization.

2961785928256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430258 (or 215125 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 70.

The spelling of 2961785928256 in words is "two trillion, nine hundred sixty-one billion, seven hundred eighty-five million, nine hundred twenty-eight thousand, two hundred fifty-six".