619923953728 has 112 divisors (see below), whose sum is σ = 1309133312640. Its totient is φ = 290428416000.

The previous prime is 619923953707. The next prime is 619923953743. The reversal of 619923953728 is 827359329916.

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 619923953728.

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, 146517373 + ... + 146521603.

Almost surely, 2^619923953728 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 619923953728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654566656320).

619923953728 is an abundant number, since it is smaller than the sum of its proper divisors (689209358912).

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

619923953728 is a wasteful number, since it uses less digits than its factorization.

619923953728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5546 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 64.

The spelling of 619923953728 in words is "six hundred nineteen billion, nine hundred twenty-three million, nine hundred fifty-three thousand, seven hundred twenty-eight".