612228403508 has 6 divisors (see below), whose sum is σ = 1071399706146. Its totient is φ = 306114201752.

The previous prime is 612228403499. The next prime is 612228403547. The reversal of 612228403508 is 805304822216.

It can be written as a sum of positive squares in only one way, i.e., 498927497104 + 113300906404 = 706348^2 + 336602^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76528550435 + ... + 76528550442.

It is an arithmetic number, because the mean of its divisors is an integer number (178566617691).

Almost surely, 2^612228403508 is an apocalyptic number.

It is an amenable number.

612228403508 is a deficient number, since it is larger than the sum of its proper divisors (459171302638).

612228403508 is a wasteful number, since it uses less digits than its factorization.

612228403508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153057100881 (or 153057100879 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 612228403508 in words is "six hundred twelve billion, two hundred twenty-eight million, four hundred three thousand, five hundred eight".