619947209728 has 528 divisors, whose sum is σ = 1709748725760. Its totient is φ = 221327769600.

The previous prime is 619947209723. The next prime is 619947209729. The reversal of 619947209728 is 827902749916.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 619947209728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619947209723) 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 47 ways as a sum of consecutive naturals, for example, 325089351 + ... + 325091257.

Almost surely, 2^619947209728 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 619947209728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (854874362880).

619947209728 is an abundant number, since it is smaller than the sum of its proper divisors (1089801516032).

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

619947209728 is a wasteful number, since it uses less digits than its factorization.

619947209728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1977 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 619947209728 in words is "six hundred nineteen billion, nine hundred forty-seven million, two hundred nine thousand, seven hundred twenty-eight".