40649235266 has 16 divisors (see below), whose sum is σ = 62230620408. Its totient is φ = 19908460800.

The previous prime is 40649235233. The next prime is 40649235269. The reversal of 40649235266 is 66253294604.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26871405625 + 13777829641 = 163925^2 + 117379^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40649235266.

It is not an unprimeable number, because it can be changed into a prime (40649235269) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 661865 + ... + 720668.

Almost surely, 2^40649235266 is an apocalyptic number.

40649235266 is a deficient number, since it is larger than the sum of its proper divisors (21581385142).

40649235266 is a wasteful number, since it uses less digits than its factorization.

40649235266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382837.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 40649235266 in words is "forty billion, six hundred forty-nine million, two hundred thirty-five thousand, two hundred sixty-six".