612459242640 has 120 divisors (see below), whose sum is σ = 2350676922048. Its totient is φ = 139990682880.

The previous prime is 612459242623. The next prime is 612459242683. The reversal of 612459242640 is 46242954216.

It is a happy number.

612459242640 is a `hidden beast` number, since 6 + 12 + 4 + 592 + 4 + 2 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60754806 + ... + 60764885.

Almost surely, 2^612459242640 is an apocalyptic number.

612459242640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612459242640 is an abundant number, since it is smaller than the sum of its proper divisors (1738217679408).

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

612459242640 is a wasteful number, since it uses less digits than its factorization.

612459242640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121519717 (or 121519708 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 612459242640 in words is "six hundred twelve billion, four hundred fifty-nine million, two hundred forty-two thousand, six hundred forty".