248294765921 has 2 divisors, whose sum is σ = 248294765922. Its totient is φ = 248294765920.

The previous prime is 248294765911. The next prime is 248294765951. The reversal of 248294765921 is 129567492842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183607965025 + 64686800896 = 428495^2 + 254336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248294765921 is a prime.

It is a super-3 number, since 3×248294765921³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (248294765911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124147382960 + 124147382961.

It is an arithmetic number, because the mean of its divisors is an integer number (124147382961).

Almost surely, 2^248294765921 is an apocalyptic number.

It is an amenable number.

248294765921 is a deficient number, since it is larger than the sum of its proper divisors (1).

248294765921 is an equidigital number, since it uses as much as digits as its factorization.

248294765921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 59.

The spelling of 248294765921 in words is "two hundred forty-eight billion, two hundred ninety-four million, seven hundred sixty-five thousand, nine hundred twenty-one".