66073004786450 has 12 divisors (see below), whose sum is σ = 122895788902890. Its totient is φ = 26429201914560.

The previous prime is 66073004786377. The next prime is 66073004786521. The reversal of 66073004786450 is 5468740037066.

It can be written as a sum of positive squares in 3 ways, for example, as 55729763466169 + 10343241320281 = 7465237^2 + 3216091^2 .

It is a super-2 number, since 2×66073004786450² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 660730047815 + ... + 660730047914.

Almost surely, 2^{66073004786450} is an apocalyptic number.

66073004786450 is a deficient number, since it is larger than the sum of its proper divisors (56822784116440).

66073004786450 is a wasteful number, since it uses less digits than its factorization.

66073004786450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321460095741 (or 1321460095736 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 66073004786450 in words is "sixty-six trillion, seventy-three billion, four million, seven hundred eighty-six thousand, four hundred fifty".