2156363065 has 16 divisors (see below), whose sum is σ = 2627182080. Its totient is φ = 1698840000.

The previous prime is 2156362963. The next prime is 2156363173. The reversal of 2156363065 is 5603636512.

It is not a de Polignac number, because 2156363065 - 2¹⁹ = 2155838777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149940 + ... + 163690.

It is an arithmetic number, because the mean of its divisors is an integer number (164198880).

Almost surely, 2^2156363065 is an apocalyptic number.

It is an amenable number.

2156363065 is a deficient number, since it is larger than the sum of its proper divisors (470819015).

2156363065 is a wasteful number, since it uses less digits than its factorization.

2156363065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14232.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 2156363065 is about 46436.6564795529. The cubic root of 2156363065 is about 1291.9348935760.

Adding to 2156363065 its reverse (5603636512), we get a palindrome (7759999577).

The spelling of 2156363065 in words is "two billion, one hundred fifty-six million, three hundred sixty-three thousand, sixty-five".