612475885728 has 864 divisors, whose sum is σ = 2240640589824. Its totient is φ = 163713166848.

The previous prime is 612475885699. The next prime is 612475885753. The reversal of 612475885728 is 827588574216.

612475885728 is a `hidden beast` number, since 6 + 1 + 2 + 4 + 7 + 58 + 8 + 572 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-2 number, since 2×612475885728² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 411886201 + ... + 411887687.

It is an arithmetic number, because the mean of its divisors is an integer number (2593334016).

Almost surely, 2^612475885728 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 612475885728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120320294912).

612475885728 is an abundant number, since it is smaller than the sum of its proper divisors (1628164704096).

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

612475885728 is a wasteful number, since it uses less digits than its factorization.

612475885728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1569 counting only the distinct ones).

The product of its digits is 60211200, while the sum is 63.

The spelling of 612475885728 in words is "six hundred twelve billion, four hundred seventy-five million, eight hundred eighty-five thousand, seven hundred twenty-eight".