266041021302634 has 4 divisors (see below), whose sum is σ = 399061531953954. Its totient is φ = 133020510651316.

The previous prime is 266041021302631. The next prime is 266041021302647. The reversal of 266041021302634 is 436203120140662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 159375399613609 + 106665621689025 = 12624397^2 + 10327905^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (266041021302631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66510255325657 + ... + 66510255325660.

Almost surely, 2^{266041021302634} is an apocalyptic number.

266041021302634 is a deficient number, since it is larger than the sum of its proper divisors (133020510651320).

266041021302634 is a wasteful number, since it uses less digits than its factorization.

266041021302634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133020510651319.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 266041021302634 in words is "two hundred sixty-six trillion, forty-one billion, twenty-one million, three hundred two thousand, six hundred thirty-four".