612221740900 has 144 divisors (see below), whose sum is σ = 1659972004992. Its totient is φ = 190403712000.

The previous prime is 612221740859. The next prime is 612221740901. The reversal of 612221740900 is 9047122216.

It is not an unprimeable number, because it can be changed into a prime (612221740901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3431910 + ... + 3605890.

It is an arithmetic number, because the mean of its divisors is an integer number (11527583368).

Almost surely, 2^612221740900 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 612221740900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829986002496).

612221740900 is an abundant number, since it is smaller than the sum of its proper divisors (1047750264092).

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

612221740900 is a wasteful number, since it uses less digits than its factorization.

612221740900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174470 (or 174463 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 612221740900 in words is "six hundred twelve billion, two hundred twenty-one million, seven hundred forty thousand, nine hundred".