66040060162405 has 12 divisors (see below), whose sum is σ = 92186532961740. Its totient is φ = 45284612682624.

The previous prime is 66040060162393. The next prime is 66040060162441. The reversal of 66040060162405 is 50426106004066.

It can be written as a sum of positive squares in 2 ways, for example, as 21862422978529 + 44177637183876 = 4675727^2 + 6646626^2 .

It is not a de Polignac number, because 66040060162405 - 2⁷ = 66040060162277 is a prime.

It is a super-2 number, since 2×66040060162405² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134775632740 + ... + 134775633229.

It is an arithmetic number, because the mean of its divisors is an integer number (7682211080145).

Almost surely, 2^{66040060162405} is an apocalyptic number.

It is an amenable number.

66040060162405 is a deficient number, since it is larger than the sum of its proper divisors (26146472799335).

66040060162405 is a wasteful number, since it uses less digits than its factorization.

66040060162405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269551265988 (or 269551265981 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 66040060162405 in words is "sixty-six trillion, forty billion, sixty million, one hundred sixty-two thousand, four hundred five".