651919575823 has 2 divisors, whose sum is σ = 651919575824. Its totient is φ = 651919575822.

The previous prime is 651919575733. The next prime is 651919575851. The reversal of 651919575823 is 328575919156.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651919575823 is a prime.

It is a super-2 number, since 2×651919575823² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651919575893) 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, 325959787911 + 325959787912.

It is an arithmetic number, because the mean of its divisors is an integer number (325959787912).

Almost surely, 2^651919575823 is an apocalyptic number.

651919575823 is a deficient number, since it is larger than the sum of its proper divisors (1).

651919575823 is an equidigital number, since it uses as much as digits as its factorization.

651919575823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412000, while the sum is 61.

The spelling of 651919575823 in words is "six hundred fifty-one billion, nine hundred nineteen million, five hundred seventy-five thousand, eight hundred twenty-three".