1535435339981 has 2 divisors, whose sum is σ = 1535435339982. Its totient is φ = 1535435339980.

The previous prime is 1535435339951. The next prime is 1535435340067. The reversal of 1535435339981 is 1899335345351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1496624369956 + 38810970025 = 1223366^2 + 197005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1535435339981 is a prime.

It is a super-2 number, since 2×1535435339981² (a number of 25 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 1535435339981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1535435339951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767717669990 + 767717669991.

It is an arithmetic number, because the mean of its divisors is an integer number (767717669991).

Almost surely, 2^{1535435339981} is an apocalyptic number.

It is an amenable number.

1535435339981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1535435339981 is an equidigital number, since it uses as much as digits as its factorization.

1535435339981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244000, while the sum is 59.

The spelling of 1535435339981 in words is "one trillion, five hundred thirty-five billion, four hundred thirty-five million, three hundred thirty-nine thousand, nine hundred eighty-one".