2000215651 has 4 divisors (see below), whose sum is σ = 2285960752. Its totient is φ = 1714470552.

The previous prime is 2000215561. The next prime is 2000215667. The reversal of 2000215651 is 1565120002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2000215651 - 2²³ = 1991827043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000215691) 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 3 ways as a sum of consecutive naturals, for example, 142872540 + ... + 142872553.

It is an arithmetic number, because the mean of its divisors is an integer number (571490188).

Almost surely, 2^2000215651 is an apocalyptic number.

2000215651 is a deficient number, since it is larger than the sum of its proper divisors (285745101).

2000215651 is an equidigital number, since it uses as much as digits as its factorization.

2000215651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285745100.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2000215651 is about 44723.7705364832. The cubic root of 2000215651 is about 1259.9663321398.

Adding to 2000215651 its reverse (1565120002), we get a palindrome (3565335653).

It can be divided in two parts, 20002 and 15651, that added together give a palindrome (35653).

The spelling of 2000215651 in words is "two billion, two hundred fifteen thousand, six hundred fifty-one".