620743656543 has 16 divisors (see below), whose sum is σ = 835547596800. Its totient is φ = 409903062624.

The previous prime is 620743656509. The next prime is 620743656581. The reversal of 620743656543 is 345656347026.

It is not a de Polignac number, because 620743656543 - 2⁸ = 620743656287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620743616543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2198196 + ... + 2464457.

It is an arithmetic number, because the mean of its divisors is an integer number (52221724800).

Almost surely, 2^620743656543 is an apocalyptic number.

620743656543 is a deficient number, since it is larger than the sum of its proper divisors (214803940257).

620743656543 is a wasteful number, since it uses less digits than its factorization.

620743656543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663078.

The product of its (nonzero) digits is 10886400, while the sum is 51.

The spelling of 620743656543 in words is "six hundred twenty billion, seven hundred forty-three million, six hundred fifty-six thousand, five hundred forty-three".