5665267801951 has 2 divisors, whose sum is σ = 5665267801952. Its totient is φ = 5665267801950.

The previous prime is 5665267801877. The next prime is 5665267801981. The reversal of 5665267801951 is 1591087625665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5665267801951 - 2⁹ = 5665267801439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5665267801951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5665267801981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832633900975 + 2832633900976.

It is an arithmetic number, because the mean of its divisors is an integer number (2832633900976).

Almost surely, 2^{5665267801951} is an apocalyptic number.

5665267801951 is a deficient number, since it is larger than the sum of its proper divisors (1).

5665267801951 is an equidigital number, since it uses as much as digits as its factorization.

5665267801951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216000, while the sum is 61.

The spelling of 5665267801951 in words is "five trillion, six hundred sixty-five billion, two hundred sixty-seven million, eight hundred one thousand, nine hundred fifty-one".