66168467481232 has 20 divisors (see below), whose sum is σ = 128230884243900. Its totient is φ = 33076626386048.

The previous prime is 66168467481211. The next prime is 66168467481287. The reversal of 66168467481232 is 23218476486166.

It can be written as a sum of positive squares in 2 ways, for example, as 19462779248896 + 46705688232336 = 4411664^2 + 6834156^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475387903 + ... + 475527070.

It is an arithmetic number, because the mean of its divisors is an integer number (6411544212195).

Almost surely, 2^{66168467481232} is an apocalyptic number.

It is an amenable number.

66168467481232 is a deficient number, since it is larger than the sum of its proper divisors (62062416762668).

66168467481232 is a wasteful number, since it uses less digits than its factorization.

66168467481232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950919330 (or 950919324 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 64.

The spelling of 66168467481232 in words is "sixty-six trillion, one hundred sixty-eight billion, four hundred sixty-seven million, four hundred eighty-one thousand, two hundred thirty-two".