612551332683838 has 32 divisors (see below), whose sum is σ = 930905095357440. Its totient is φ = 302269835700000.

The previous prime is 612551332683799. The next prime is 612551332683841. The reversal of 612551332683838 is 838386233155216.

It is a self number, because there is not a number n which added to its sum of digits gives 612551332683838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168693373 + ... + 172286263.

It is an arithmetic number, because the mean of its divisors is an integer number (29090784229920).

Almost surely, 2^{612551332683838} is an apocalyptic number.

612551332683838 is a deficient number, since it is larger than the sum of its proper divisors (318353762673602).

612551332683838 is a wasteful number, since it uses less digits than its factorization.

612551332683838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595704.

The product of its digits is 149299200, while the sum is 64.

The spelling of 612551332683838 in words is "six hundred twelve trillion, five hundred fifty-one billion, three hundred thirty-two million, six hundred eighty-three thousand, eight hundred thirty-eight".