65613071252 has 6 divisors (see below), whose sum is σ = 114822874698. Its totient is φ = 32806535624.

The previous prime is 65613071243. The next prime is 65613071291. The reversal of 65613071252 is 25217031656.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40450863376 + 25162207876 = 201124^2 + 158626^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8201633903 + ... + 8201633910.

It is an arithmetic number, because the mean of its divisors is an integer number (19137145783).

Almost surely, 2^65613071252 is an apocalyptic number.

It is an amenable number.

65613071252 is a deficient number, since it is larger than the sum of its proper divisors (49209803446).

65613071252 is a wasteful number, since it uses less digits than its factorization.

65613071252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16403267817 (or 16403267815 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 65613071252 in words is "sixty-five billion, six hundred thirteen million, seventy-one thousand, two hundred fifty-two".