620427521536 has 160 divisors (see below), whose sum is σ = 1337121561600. Its totient is φ = 286895431680.

The previous prime is 620427521507. The next prime is 620427521557. The reversal of 620427521536 is 635125724026.

It is a junction number, because it is equal to n+sod(n) for n = 620427521492 and 620427521501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42374505 + ... + 42389143.

It is an arithmetic number, because the mean of its divisors is an integer number (8357009760).

Almost surely, 2^620427521536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620427521536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668560780800).

620427521536 is an abundant number, since it is smaller than the sum of its proper divisors (716694040064).

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

620427521536 is a wasteful number, since it uses less digits than its factorization.

620427521536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14800 (or 14784 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 620427521536 in words is "six hundred twenty billion, four hundred twenty-seven million, five hundred twenty-one thousand, five hundred thirty-six".