65020321621252 has 12 divisors (see below), whose sum is σ = 114069317360796. Its totient is φ = 32429088089600.

The previous prime is 65020321621243. The next prime is 65020321621253. The reversal of 65020321621252 is 25212612302056.

It can be written as a sum of positive squares in 2 ways, for example, as 49940566794496 + 15079754826756 = 7066864^2 + 3883266^2 .

It is not an unprimeable number, because it can be changed into a prime (65020321621253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20268178453 + ... + 20268181660.

It is an arithmetic number, because the mean of its divisors is an integer number (9505776446733).

Almost surely, 2^{65020321621252} is an apocalyptic number.

It is an amenable number.

65020321621252 is a deficient number, since it is larger than the sum of its proper divisors (49048995739544).

65020321621252 is a wasteful number, since it uses less digits than its factorization.

65020321621252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40536360518 (or 40536360516 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 65020321621252 in words is "sixty-five trillion, twenty billion, three hundred twenty-one million, six hundred twenty-one thousand, two hundred fifty-two".