66064070049 has 16 divisors (see below), whose sum is σ = 91134940800. Its totient is φ = 42518359296.

The previous prime is 66064070047. The next prime is 66064070069. The reversal of 66064070049 is 94007046066.

It is not a de Polignac number, because 66064070049 - 2¹ = 66064070047 is a prime.

It is a super-2 number, since 2×66064070049² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66064070041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667932 + ... + 760434.

It is an arithmetic number, because the mean of its divisors is an integer number (5695933800).

Almost surely, 2^66064070049 is an apocalyptic number.

It is an amenable number.

66064070049 is a deficient number, since it is larger than the sum of its proper divisors (25070870751).

66064070049 is a wasteful number, since it uses less digits than its factorization.

66064070049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100744.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 66064070049 in words is "sixty-six billion, sixty-four million, seventy thousand, forty-nine".