612551332683840 has 448 divisors, whose sum is σ = 2142457761588480. Its totient is φ = 147047744962560.

The previous prime is 612551332683799. The next prime is 612551332683841. The reversal of 612551332683840 is 48386233155216.

It is not an unprimeable number, because it can be changed into a prime (612551332683841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 485140066 + ... + 486401054.

It is an arithmetic number, because the mean of its divisors is an integer number (4782271789260).

Almost surely, 2^{612551332683840} is an apocalyptic number.

612551332683840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612551332683840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071228880794240).

612551332683840 is an abundant number, since it is smaller than the sum of its proper divisors (1529906428904640).

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

612551332683840 is a wasteful number, since it uses less digits than its factorization.

612551332683840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261470 (or 1261460 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 57.

The spelling of 612551332683840 in words is "six hundred twelve trillion, five hundred fifty-one billion, three hundred thirty-two million, six hundred eighty-three thousand, eight hundred forty".