11818699273 has 2 divisors, whose sum is σ = 11818699274. Its totient is φ = 11818699272.

The previous prime is 11818699241. The next prime is 11818699279. The reversal of 11818699273 is 37299681811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11765307024 + 53392249 = 108468^2 + 7307^2 .

It is a cyclic number.

It is not a de Polignac number, because 11818699273 - 2⁵ = 11818699241 is a prime.

It is a super-2 number, since 2×11818699273² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11818699279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909349636 + 5909349637.

It is an arithmetic number, because the mean of its divisors is an integer number (5909349637).

Almost surely, 2^11818699273 is an apocalyptic number.

It is an amenable number.

11818699273 is a deficient number, since it is larger than the sum of its proper divisors (1).

11818699273 is an equidigital number, since it uses as much as digits as its factorization.

11818699273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 55.

The spelling of 11818699273 in words is "eleven billion, eight hundred eighteen million, six hundred ninety-nine thousand, two hundred seventy-three".