5535701851661 has 2 divisors, whose sum is σ = 5535701851662. Its totient is φ = 5535701851660.

The previous prime is 5535701851637. The next prime is 5535701851709. The reversal of 5535701851661 is 1661581075355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3731005159561 + 1804696692100 = 1931581^2 + 1343390^2 .

It is a cyclic number.

It is not a de Polignac number, because 5535701851661 - 2⁴² = 1137655340557 is a prime.

It is a super-3 number, since 3×5535701851661³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5535701851621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2767850925830 + 2767850925831.

It is an arithmetic number, because the mean of its divisors is an integer number (2767850925831).

Almost surely, 2^{5535701851661} is an apocalyptic number.

It is an amenable number.

5535701851661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5535701851661 is an equidigital number, since it uses as much as digits as its factorization.

5535701851661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780000, while the sum is 53.

The spelling of 5535701851661 in words is "five trillion, five hundred thirty-five billion, seven hundred one million, eight hundred fifty-one thousand, six hundred sixty-one".