612889755984 has 160 divisors (see below), whose sum is σ = 1919972292480. Its totient is φ = 185644569600.

The previous prime is 612889755967. The next prime is 612889755997. The reversal of 612889755984 is 489557988216.

612889755984 is a `hidden beast` number, since 6 + 1 + 28 + 8 + 9 + 7 + 5 + 598 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11573214 + ... + 11626050.

It is an arithmetic number, because the mean of its divisors is an integer number (11999826828).

Almost surely, 2^612889755984 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 612889755984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (959986146240).

612889755984 is an abundant number, since it is smaller than the sum of its proper divisors (1307082536496).

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

612889755984 is a wasteful number, since it uses less digits than its factorization.

612889755984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55306 (or 55294 counting only the distinct ones).

The product of its digits is 348364800, while the sum is 72.

The spelling of 612889755984 in words is "six hundred twelve billion, eight hundred eighty-nine million, seven hundred fifty-five thousand, nine hundred eighty-four".