65947242512 has 10 divisors (see below), whose sum is σ = 127772782398. Its totient is φ = 32973621248.

The previous prime is 65947242479. The next prime is 65947242521. The reversal of 65947242512 is 21524274956.

It can be written as a sum of positive squares in only one way, i.e., 65272074256 + 675168256 = 255484^2 + 25984^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060851313 + ... + 2060851344.

Almost surely, 2^65947242512 is an apocalyptic number.

It is an amenable number.

65947242512 is a deficient number, since it is larger than the sum of its proper divisors (61825539886).

65947242512 is a wasteful number, since it uses less digits than its factorization.

65947242512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121702665 (or 4121702659 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The spelling of 65947242512 in words is "sixty-five billion, nine hundred forty-seven million, two hundred forty-two thousand, five hundred twelve".