612512233420 has 24 divisors (see below), whose sum is σ = 1303895908224. Its totient is φ = 241648661376.

The previous prime is 612512233391. The next prime is 612512233423. The reversal of 612512233420 is 24332215216.

It is not an unprimeable number, because it can be changed into a prime (612512233423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209763004 + ... + 209765923.

It is an arithmetic number, because the mean of its divisors is an integer number (54328996176).

Almost surely, 2^612512233420 is an apocalyptic number.

It is an amenable number.

612512233420 is an abundant number, since it is smaller than the sum of its proper divisors (691383674804).

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

612512233420 is a wasteful number, since it uses less digits than its factorization.

612512233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419529009 (or 419529007 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 612512233420 its reverse (24332215216), we get a palindrome (636844448636).

The spelling of 612512233420 in words is "six hundred twelve billion, five hundred twelve million, two hundred thirty-three thousand, four hundred twenty".