612105021330 has 32 divisors (see below), whose sum is σ = 1602602238528. Its totient is φ = 148389096000.

The previous prime is 612105021263. The next prime is 612105021337. The reversal of 612105021330 is 33120501216.

It is a self number, because there is not a number n which added to its sum of digits gives 612105021330.

It is not an unprimeable number, because it can be changed into a prime (612105021337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927431521 + ... + 927432180.

It is an arithmetic number, because the mean of its divisors is an integer number (50081319954).

Almost surely, 2^612105021330 is an apocalyptic number.

612105021330 is an abundant number, since it is smaller than the sum of its proper divisors (990497217198).

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

612105021330 is a wasteful number, since it uses less digits than its factorization.

612105021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854863722.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 612105021330 its reverse (33120501216), we get a palindrome (645225522546).

The spelling of 612105021330 in words is "six hundred twelve billion, one hundred five million, twenty-one thousand, three hundred thirty".