266451602461 has 4 divisors (see below), whose sum is σ = 290674475424. Its totient is φ = 242228729500.

The previous prime is 266451602453. The next prime is 266451602503. The reversal of 266451602461 is 164206154662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266451602461 - 2³ = 266451602453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266451602401) 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 3 ways as a sum of consecutive naturals, for example, 12111436465 + ... + 12111436486.

It is an arithmetic number, because the mean of its divisors is an integer number (72668618856).

Almost surely, 2^266451602461 is an apocalyptic number.

It is an amenable number.

266451602461 is a deficient number, since it is larger than the sum of its proper divisors (24222872963).

266451602461 is a wasteful number, since it uses less digits than its factorization.

266451602461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24222872962.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 266451602461 in words is "two hundred sixty-six billion, four hundred fifty-one million, six hundred two thousand, four hundred sixty-one".