135837084881 has 2 divisors, whose sum is σ = 135837084882. Its totient is φ = 135837084880.

The previous prime is 135837084863. The next prime is 135837084913. The reversal of 135837084881 is 188480738531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128121043600 + 7716041281 = 357940^2 + 87841^2 .

It is a cyclic number.

It is not a de Polignac number, because 135837084881 - 2²² = 135832890577 is a prime.

It is a super-2 number, since 2×135837084881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135837084181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67918542440 + 67918542441.

It is an arithmetic number, because the mean of its divisors is an integer number (67918542441).

Almost surely, 2^135837084881 is an apocalyptic number.

It is an amenable number.

135837084881 is a deficient number, since it is larger than the sum of its proper divisors (1).

135837084881 is an equidigital number, since it uses as much as digits as its factorization.

135837084881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 135837084881 in words is "one hundred thirty-five billion, eight hundred thirty-seven million, eighty-four thousand, eight hundred eighty-one".