2651421954463 has 2 divisors, whose sum is σ = 2651421954464. Its totient is φ = 2651421954462.

The previous prime is 2651421954449. The next prime is 2651421954481. The reversal of 2651421954463 is 3644591241562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2651421954463 - 2²¹ = 2651419857311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2651421954463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2651421954563) 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 as a sum of consecutive naturals, namely, 1325710977231 + 1325710977232.

It is an arithmetic number, because the mean of its divisors is an integer number (1325710977232).

Almost surely, 2^{2651421954463} is an apocalyptic number.

2651421954463 is a deficient number, since it is larger than the sum of its proper divisors (1).

2651421954463 is an equidigital number, since it uses as much as digits as its factorization.

2651421954463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 52.

The spelling of 2651421954463 in words is "two trillion, six hundred fifty-one billion, four hundred twenty-one million, nine hundred fifty-four thousand, four hundred sixty-three".