265399098551 has 2 divisors, whose sum is σ = 265399098552. Its totient is φ = 265399098550.

The previous prime is 265399098541. The next prime is 265399098581. The reversal of 265399098551 is 155890993562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265399098551 - 2¹⁰ = 265399097527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265399098511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132699549275 + 132699549276.

It is an arithmetic number, because the mean of its divisors is an integer number (132699549276).

Almost surely, 2^265399098551 is an apocalyptic number.

265399098551 is a deficient number, since it is larger than the sum of its proper divisors (1).

265399098551 is an equidigital number, since it uses as much as digits as its factorization.

265399098551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244000, while the sum is 62.

The spelling of 265399098551 in words is "two hundred sixty-five billion, three hundred ninety-nine million, ninety-eight thousand, five hundred fifty-one".