612165904812 has 288 divisors, whose sum is σ = 2096304537600. Its totient is φ = 145775894400.

The previous prime is 612165904771. The next prime is 612165904829. The reversal of 612165904812 is 218409561216.

612165904812 is a `hidden beast` number, since 6 + 1 + 2 + 1 + 6 + 590 + 48 + 12 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1445239 + ... + 1820177.

It is an arithmetic number, because the mean of its divisors is an integer number (7278835200).

Almost surely, 2^612165904812 is an apocalyptic number.

612165904812 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612165904812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048152268800).

612165904812 is an abundant number, since it is smaller than the sum of its proper divisors (1484138632788).

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

612165904812 is a wasteful number, since it uses less digits than its factorization.

612165904812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375017 (or 375012 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 612165904812 in words is "six hundred twelve billion, one hundred sixty-five million, nine hundred four thousand, eight hundred twelve".