2163355651 has 2 divisors, whose sum is σ = 2163355652. Its totient is φ = 2163355650.

The previous prime is 2163355631. The next prime is 2163355679. The reversal of 2163355651 is 1565533612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2163355651 - 2⁵ = 2163355619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2163355651.

It is not a weakly prime, because it can be changed into another prime (2163355631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081677825 + 1081677826.

It is an arithmetic number, because the mean of its divisors is an integer number (1081677826).

Almost surely, 2^2163355651 is an apocalyptic number.

2163355651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163355651 is an equidigital number, since it uses as much as digits as its factorization.

2163355651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81000, while the sum is 37.

The square root of 2163355651 is about 46511.8872010156. The cubic root of 2163355651 is about 1293.3298686817.

It can be divided in two parts, 21633 and 55651, that added together give a square (77284 = 278²).

The spelling of 2163355651 in words is "two billion, one hundred sixty-three million, three hundred fifty-five thousand, six hundred fifty-one".