646061132052 has 192 divisors, whose sum is σ = 1924378337280. Its totient is φ = 183615465600.

The previous prime is 646061132023. The next prime is 646061132071. The reversal of 646061132052 is 250231160646.

646061132052 is a `hidden beast` number, since 6 + 4 + 6 + 0 + 611 + 32 + 0 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 646061131998 and 646061132016.

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, 116804527 + ... + 116810057.

It is an arithmetic number, because the mean of its divisors is an integer number (10022803840).

Almost surely, 2^646061132052 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 646061132052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962189168640).

646061132052 is an abundant number, since it is smaller than the sum of its proper divisors (1278317205228).

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

646061132052 is a wasteful number, since it uses less digits than its factorization.

646061132052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339 (or 6331 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 646061132052 its reverse (250231160646), we get a palindrome (896292292698).

The spelling of 646061132052 in words is "six hundred forty-six billion, sixty-one million, one hundred thirty-two thousand, fifty-two".