620544636344 has 8 divisors (see below), whose sum is σ = 1163521193160. Its totient is φ = 310272318168.

The previous prime is 620544636329. The next prime is 620544636403. The reversal of 620544636344 is 443636445026.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38784039764 + ... + 38784039779.

It is an arithmetic number, because the mean of its divisors is an integer number (145440149145).

Almost surely, 2^620544636344 is an apocalyptic number.

It is an amenable number.

620544636344 is a deficient number, since it is larger than the sum of its proper divisors (542976556816).

620544636344 is a wasteful number, since it uses less digits than its factorization.

620544636344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77568079549 (or 77568079545 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 47.

The spelling of 620544636344 in words is "six hundred twenty billion, five hundred forty-four million, six hundred thirty-six thousand, three hundred forty-four".