620442120544 has 24 divisors (see below), whose sum is σ = 1241519943888. Its totient is φ = 305135468160.

The previous prime is 620442120521. The next prime is 620442120583. The reversal of 620442120544 is 445021244026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158922772 + ... + 158926675.

It is an arithmetic number, because the mean of its divisors is an integer number (51729997662).

Almost surely, 2^620442120544 is an apocalyptic number.

It is an amenable number.

620442120544 is an abundant number, since it is smaller than the sum of its proper divisors (621077823344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620442120544 is a wasteful number, since it uses less digits than its factorization.

620442120544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317849518 (or 317849510 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

The spelling of 620442120544 in words is "six hundred twenty billion, four hundred forty-two million, one hundred twenty thousand, five hundred forty-four".