612040608138 has 32 divisors (see below), whose sum is σ = 1296119465280. Its totient is φ = 192007781120.

The previous prime is 612040608133. The next prime is 612040608163. The reversal of 612040608138 is 831806040216.

It is a junction number, because it is equal to n+sod(n) for n = 612040608096 and 612040608105.

It is not an unprimeable number, because it can be changed into a prime (612040608133) 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, 7694173 + ... + 7773311.

It is an arithmetic number, because the mean of its divisors is an integer number (40503733290).

Almost surely, 2^612040608138 is an apocalyptic number.

612040608138 is an abundant number, since it is smaller than the sum of its proper divisors (684078857142).

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

612040608138 is a wasteful number, since it uses less digits than its factorization.

612040608138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154982.

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 612040608138 in words is "six hundred twelve billion, forty million, six hundred eight thousand, one hundred thirty-eight".