11827206826981 has 12 divisors (see below), whose sum is σ = 14636543361312. Its totient is φ = 9357790016016.

The previous prime is 11827206826937. The next prime is 11827206826991. The reversal of 11827206826981 is 18962860272811.

It is a happy number.

It is not a de Polignac number, because 11827206826981 - 2¹³ = 11827206818789 is a prime.

It is a super-2 number, since 2×11827206826981² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11827206826991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4998818271 + ... + 4998820636.

It is an arithmetic number, because the mean of its divisors is an integer number (1219711946776).

Almost surely, 2^{11827206826981} is an apocalyptic number.

It is an amenable number.

11827206826981 is a deficient number, since it is larger than the sum of its proper divisors (2809336534331).

11827206826981 is an equidigital number, since it uses as much as digits as its factorization.

11827206826981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9997638940 (or 9997638927 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 61.

The spelling of 11827206826981 in words is "eleven trillion, eight hundred twenty-seven billion, two hundred six million, eight hundred twenty-six thousand, nine hundred eighty-one".