981792977471 has 2 divisors, whose sum is σ = 981792977472. Its totient is φ = 981792977470.

The previous prime is 981792977371. The next prime is 981792977491. The reversal of 981792977471 is 174779297189.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981792977471 is a prime.

It is a super-3 number, since 3×981792977471³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 981792977395 and 981792977404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981792977491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490896488735 + 490896488736.

It is an arithmetic number, because the mean of its divisors is an integer number (490896488736).

Almost surely, 2^981792977471 is an apocalyptic number.

981792977471 is a deficient number, since it is larger than the sum of its proper divisors (1).

981792977471 is an equidigital number, since it uses as much as digits as its factorization.

981792977471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112021056, while the sum is 71.

The spelling of 981792977471 in words is "nine hundred eighty-one billion, seven hundred ninety-two million, nine hundred seventy-seven thousand, four hundred seventy-one".