35744783981 has 2 divisors, whose sum is σ = 35744783982. Its totient is φ = 35744783980.

The previous prime is 35744783903. The next prime is 35744784017. The reversal of 35744783981 is 18938744753.

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., 34636559881 + 1108224100 = 186109^2 + 33290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35744783981 is a prime.

It is a super-2 number, since 2×35744783981² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 35744783981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35744783281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17872391990 + 17872391991.

It is an arithmetic number, because the mean of its divisors is an integer number (17872391991).

Almost surely, 2^35744783981 is an apocalyptic number.

It is an amenable number.

35744783981 is a deficient number, since it is larger than the sum of its proper divisors (1).

35744783981 is an equidigital number, since it uses as much as digits as its factorization.

35744783981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 59.

The spelling of 35744783981 in words is "thirty-five billion, seven hundred forty-four million, seven hundred eighty-three thousand, nine hundred eighty-one".