612038900000 has 144 divisors (see below), whose sum is σ = 1643013590400. Its totient is φ = 222559200000.

The previous prime is 612038899991. The next prime is 612038900017. The reversal of 612038900000 is 9830216.

It is a super-2 number, since 2×612038900000² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 821801 + ... + 1378199.

It is an arithmetic number, because the mean of its divisors is an integer number (11409816600).

Almost surely, 2^612038900000 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 612038900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821506795200).

612038900000 is an abundant number, since it is smaller than the sum of its proper divisors (1030974690400).

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

612038900000 is an equidigital number, since it uses as much as digits as its factorization.

612038900000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556445 (or 556417 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 612038900000 in words is "six hundred twelve billion, thirty-eight million, nine hundred thousand".