70072165066 has 16 divisors (see below), whose sum is σ = 110784234600. Its totient is φ = 33189677248.

The previous prime is 70072165057. The next prime is 70072165067. The reversal of 70072165066 is 66056127007.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54188856225 + 15883308841 = 232785^2 + 126029^2 .

It is not an unprimeable number, because it can be changed into a prime (70072165067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11394481 + ... + 11400628.

Almost surely, 2^70072165066 is an apocalyptic number.

70072165066 is a deficient number, since it is larger than the sum of its proper divisors (40712069534).

70072165066 is a wasteful number, since it uses less digits than its factorization.

70072165066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22795193.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 70072165066 in words is "seventy billion, seventy-two million, one hundred sixty-five thousand, sixty-six".