261463366699 has 2 divisors, whose sum is σ = 261463366700. Its totient is φ = 261463366698.

The previous prime is 261463366691. The next prime is 261463366729. The reversal of 261463366699 is 996663364162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261463366699 - 2³ = 261463366691 is a prime.

It is a super-3 number, since 3×261463366699³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (261463366691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130731683349 + 130731683350.

It is an arithmetic number, because the mean of its divisors is an integer number (130731683350).

Almost surely, 2^261463366699 is an apocalyptic number.

261463366699 is a deficient number, since it is larger than the sum of its proper divisors (1).

261463366699 is an equidigital number, since it uses as much as digits as its factorization.

261463366699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45349632, while the sum is 61.

The spelling of 261463366699 in words is "two hundred sixty-one billion, four hundred sixty-three million, three hundred sixty-six thousand, six hundred ninety-nine".