11631236893 has 2 divisors, whose sum is σ = 11631236894. Its totient is φ = 11631236892.

The previous prime is 11631236887. The next prime is 11631236927. The reversal of 11631236893 is 39863213611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8805570244 + 2825666649 = 93838^2 + 53157^2 .

It is a cyclic number.

It is not a de Polignac number, because 11631236893 - 2¹³ = 11631228701 is a prime.

It is a super-2 number, since 2×11631236893² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11631236833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5815618446 + 5815618447.

It is an arithmetic number, because the mean of its divisors is an integer number (5815618447).

Almost surely, 2^11631236893 is an apocalyptic number.

It is an amenable number.

11631236893 is a deficient number, since it is larger than the sum of its proper divisors (1).

11631236893 is an equidigital number, since it uses as much as digits as its factorization.

11631236893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The spelling of 11631236893 in words is "eleven billion, six hundred thirty-one million, two hundred thirty-six thousand, eight hundred ninety-three".