647045838036 has 192 divisors, whose sum is σ = 1826165241600. Its totient is φ = 196934976000.

The previous prime is 647045838029. The next prime is 647045838097. The reversal of 647045838036 is 630838540746.

647045838036 is a `hidden beast` number, since 64 + 70 + 458 + 38 + 0 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 285166710 + ... + 285168978.

It is an arithmetic number, because the mean of its divisors is an integer number (9511277300).

Almost surely, 2^647045838036 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 647045838036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (913082620800).

647045838036 is an abundant number, since it is smaller than the sum of its proper divisors (1179119403564).

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

647045838036 is a wasteful number, since it uses less digits than its factorization.

647045838036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407 (or 4399 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 647045838036 in words is "six hundred forty-seven billion, forty-five million, eight hundred thirty-eight thousand, thirty-six".