65437775562212 has 6 divisors (see below), whose sum is σ = 114516107233878. Its totient is φ = 32718887781104.

The previous prime is 65437775562209. The next prime is 65437775562221. The reversal of 65437775562212 is 21226557773456.

It can be written as a sum of positive squares in only one way, i.e., 65043160424356 + 394615137856 = 8064934^2 + 628184^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8179721945273 + ... + 8179721945280.

It is an arithmetic number, because the mean of its divisors is an integer number (19086017872313).

Almost surely, 2^{65437775562212} is an apocalyptic number.

It is an amenable number.

65437775562212 is a deficient number, since it is larger than the sum of its proper divisors (49078331671666).

65437775562212 is a wasteful number, since it uses less digits than its factorization.

65437775562212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16359443890557 (or 16359443890555 counting only the distinct ones).

The product of its digits is 148176000, while the sum is 62.

The spelling of 65437775562212 in words is "sixty-five trillion, four hundred thirty-seven billion, seven hundred seventy-five million, five hundred sixty-two thousand, two hundred twelve".