11365260421 has 2 divisors, whose sum is σ = 11365260422. Its totient is φ = 11365260420.

The previous prime is 11365260373. The next prime is 11365260493. The reversal of 11365260421 is 12406256311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6041952900 + 5323307521 = 77730^2 + 72961^2 .

It is a cyclic number.

It is not a de Polignac number, because 11365260421 - 2⁷ = 11365260293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11365260521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5682630210 + 5682630211.

It is an arithmetic number, because the mean of its divisors is an integer number (5682630211).

Almost surely, 2^11365260421 is an apocalyptic number.

It is an amenable number.

11365260421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11365260421 is an equidigital number, since it uses as much as digits as its factorization.

11365260421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 11365260421 in words is "eleven billion, three hundred sixty-five million, two hundred sixty thousand, four hundred twenty-one".