248505261369 has 4 divisors (see below), whose sum is σ = 331340348496. Its totient is φ = 165670174244.

The previous prime is 248505261359. The next prime is 248505261379. The reversal of 248505261369 is 963162505842.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (248505261359) and next prime (248505261379).

It is a cyclic number.

It is not a de Polignac number, because 248505261369 - 2⁴ = 248505261353 is a prime.

It is a super-2 number, since 2×248505261369² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (248505261359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41417543559 + ... + 41417543564.

It is an arithmetic number, because the mean of its divisors is an integer number (82835087124).

Almost surely, 2^248505261369 is an apocalyptic number.

It is an amenable number.

248505261369 is a deficient number, since it is larger than the sum of its proper divisors (82835087127).

248505261369 is an equidigital number, since it uses as much as digits as its factorization.

248505261369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82835087126.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 248505261369 in words is "two hundred forty-eight billion, five hundred five million, two hundred sixty-one thousand, three hundred sixty-nine".