2621344563442 has 16 divisors (see below), whose sum is σ = 4541794859232. Its totient is φ = 1121430829120.

The previous prime is 2621344563437. The next prime is 2621344563449. The reversal of 2621344563442 is 2443654431262.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2621344563392 and 2621344563401.

It is not an unprimeable number, because it can be changed into a prime (2621344563449) 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 7 ways as a sum of consecutive naturals, for example, 3504470968 + ... + 3504471715.

It is an arithmetic number, because the mean of its divisors is an integer number (283862178702).

Almost surely, 2^{2621344563442} is an apocalyptic number.

2621344563442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2621344563442 is a deficient number, since it is larger than the sum of its proper divisors (1920450295790).

2621344563442 is a wasteful number, since it uses less digits than its factorization.

2621344563442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7008942713.

The product of its digits is 3317760, while the sum is 46.

The spelling of 2621344563442 in words is "two trillion, six hundred twenty-one billion, three hundred forty-four million, five hundred sixty-three thousand, four hundred forty-two".