7205005520066 has 16 divisors (see below), whose sum is σ = 10908006092280. Its totient is φ = 3569011649280.

The previous prime is 7205005519967. The next prime is 7205005520071. The reversal of 7205005520066 is 6600255005027.

It can be written as a sum of positive squares in 4 ways, for example, as 6950262232225 + 254743287841 = 2636335^2 + 504721^2 .

It is a super-2 number, since 2×7205005520066² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266375 + ... + 3805386.

Almost surely, 2^{7205005520066} is an apocalyptic number.

7205005520066 is a deficient number, since it is larger than the sum of its proper divisors (3703000572214).

7205005520066 is a wasteful number, since it uses less digits than its factorization.

7205005520066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079989.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 7205005520066 in words is "seven trillion, two hundred five billion, five million, five hundred twenty thousand, sixty-six".