612856553976 has 576 divisors, whose sum is σ = 1974946989600. Its totient is φ = 177044963328.

The previous prime is 612856553927. The next prime is 612856554019. The reversal of 612856553976 is 679355658216.

It is a happy number.

612856553976 is a `hidden beast` number, since 6 + 1 + 2 + 8 + 5 + 6 + 553 + 9 + 76 = 666.

Its product of digits (81648000) is a multiple of the sum of its prime factors (1080).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 627283600 + ... + 627284576.

Almost surely, 2^612856553976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612856553976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987473494800).

612856553976 is an abundant number, since it is smaller than the sum of its proper divisors (1362090435624).

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

612856553976 is a wasteful number, since it uses less digits than its factorization.

612856553976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1055 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 63.

The spelling of 612856553976 in words is "six hundred twelve billion, eight hundred fifty-six million, five hundred fifty-three thousand, nine hundred seventy-six".