6521651002052 has 6 divisors (see below), whose sum is σ = 11412889253598. Its totient is φ = 3260825501024.

The previous prime is 6521651001989. The next prime is 6521651002081. The reversal of 6521651002052 is 2502001561256.

It can be written as a sum of positive squares in only one way, i.e., 4800060337216 + 1721590664836 = 2190904^2 + 1312094^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815206375253 + ... + 815206375260.

It is an arithmetic number, because the mean of its divisors is an integer number (1902148208933).

Almost surely, 2^{6521651002052} is an apocalyptic number.

It is an amenable number.

6521651002052 is a deficient number, since it is larger than the sum of its proper divisors (4891238251546).

6521651002052 is a wasteful number, since it uses less digits than its factorization.

6521651002052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630412750517 (or 1630412750515 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 6521651002052 in words is "six trillion, five hundred twenty-one billion, six hundred fifty-one million, two thousand, fifty-two".