35546615981 has 2 divisors, whose sum is σ = 35546615982. Its totient is φ = 35546615980.

The previous prime is 35546615963. The next prime is 35546616043. The reversal of 35546615981 is 18951664553.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35451241225 + 95374756 = 188285^2 + 9766^2 .

It is a cyclic number.

It is not a de Polignac number, because 35546615981 - 2⁶ = 35546615917 is a prime.

It is a super-2 number, since 2×35546615981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35546615911) 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, 17773307990 + 17773307991.

It is an arithmetic number, because the mean of its divisors is an integer number (17773307991).

Almost surely, 2^35546615981 is an apocalyptic number.

It is an amenable number.

35546615981 is a deficient number, since it is larger than the sum of its proper divisors (1).

35546615981 is an equidigital number, since it uses as much as digits as its factorization.

35546615981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 53.

The spelling of 35546615981 in words is "thirty-five billion, five hundred forty-six million, six hundred fifteen thousand, nine hundred eighty-one".