66016533316425 has 144 divisors (see below), whose sum is σ = 120602355330240. Its totient is φ = 31817475002880.

The previous prime is 66016533316403. The next prime is 66016533316493. The reversal of 66016533316425 is 52461333561066.

It is not a de Polignac number, because 66016533316425 - 2⁹ = 66016533315913 is a prime.

It is a super-2 number, since 2×66016533316425² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 64663027 + ... + 65676023.

It is an arithmetic number, because the mean of its divisors is an integer number (837516356460).

Almost surely, 2^{66016533316425} is an apocalyptic number.

It is an amenable number.

66016533316425 is a deficient number, since it is larger than the sum of its proper divisors (54585822013815).

66016533316425 is a wasteful number, since it uses less digits than its factorization.

66016533316425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013160 (or 1013136 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 66016533316425 in words is "sixty-six trillion, sixteen billion, five hundred thirty-three million, three hundred sixteen thousand, four hundred twenty-five".