2156982575 has 12 divisors (see below), whose sum is σ = 2917809528. Its totient is φ = 1568714400.

The previous prime is 2156982547. The next prime is 2156982577. The reversal of 2156982575 is 5752896512.

It is not a de Polignac number, because 2156982575 - 2¹⁸ = 2156720431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156982577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3921512 + ... + 3922061.

It is an arithmetic number, because the mean of its divisors is an integer number (243150794).

Almost surely, 2^2156982575 is an apocalyptic number.

2156982575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2156982575 is a deficient number, since it is larger than the sum of its proper divisors (760826953).

2156982575 is a wasteful number, since it uses less digits than its factorization.

2156982575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843594 (or 7843589 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 50.

The square root of 2156982575 is about 46443.3264850829. The cubic root of 2156982575 is about 1292.0586034101.

The spelling of 2156982575 in words is "two billion, one hundred fifty-six million, nine hundred eighty-two thousand, five hundred seventy-five".