651052180808064 has 2560 divisors, whose sum is σ = 2417212098048000. Its totient is φ = 169847069736960.

The previous prime is 651052180808041. The next prime is 651052180808077. The reversal of 651052180808064 is 460808081250156.

651052180808064 is a `hidden beast` number, since 6 + 51 + 0 + 521 + 8 + 0 + 8 + 0 + 8 + 0 + 64 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 651052180808064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1406160217497 + ... + 1406160217959.

It is an arithmetic number, because the mean of its divisors is an integer number (944223475800).

Almost surely, 2^{651052180808064} is an apocalyptic number.

651052180808064 is a gapful number since it is divisible by the number (64) 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 651052180808064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208606049024000).

651052180808064 is an abundant number, since it is smaller than the sum of its proper divisors (1766159917239936).

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

651052180808064 is a wasteful number, since it uses less digits than its factorization.

651052180808064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The spelling of 651052180808064 in words is "six hundred fifty-one trillion, fifty-two billion, one hundred eighty million, eight hundred eight thousand, sixty-four".