135407848661 has 2 divisors, whose sum is σ = 135407848662. Its totient is φ = 135407848660.

The previous prime is 135407848643. The next prime is 135407848747. The reversal of 135407848661 is 166848704531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126953965636 + 8453883025 = 356306^2 + 91945^2 .

It is an emirp because it is prime and its reverse (166848704531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135407848661 - 2¹⁴ = 135407832277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135407848361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67703924330 + 67703924331.

It is an arithmetic number, because the mean of its divisors is an integer number (67703924331).

Almost surely, 2^135407848661 is an apocalyptic number.

It is an amenable number.

135407848661 is a deficient number, since it is larger than the sum of its proper divisors (1).

135407848661 is an equidigital number, since it uses as much as digits as its factorization.

135407848661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 135407848661 in words is "one hundred thirty-five billion, four hundred seven million, eight hundred forty-eight thousand, six hundred sixty-one".