262641694451 has 2 divisors, whose sum is σ = 262641694452. Its totient is φ = 262641694450.

The previous prime is 262641694423. The next prime is 262641694477. The reversal of 262641694451 is 154496146262.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262641694451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 262641694451.

It is not a weakly prime, because it can be changed into another prime (262641694481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131320847225 + 131320847226.

It is an arithmetic number, because the mean of its divisors is an integer number (131320847226).

Almost surely, 2^262641694451 is an apocalyptic number.

262641694451 is a deficient number, since it is larger than the sum of its proper divisors (1).

262641694451 is an equidigital number, since it uses as much as digits as its factorization.

262641694451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 50.

The spelling of 262641694451 in words is "two hundred sixty-two billion, six hundred forty-one million, six hundred ninety-four thousand, four hundred fifty-one".