135830781178637 has 2 divisors, whose sum is σ = 135830781178638. Its totient is φ = 135830781178636.

The previous prime is 135830781178583. The next prime is 135830781178693. The reversal of 135830781178637 is 736871187038531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80939189417641 + 54891591760996 = 8996621^2 + 7408886^2 .

It is a cyclic number.

It is not a de Polignac number, because 135830781178637 - 2¹⁶ = 135830781113101 is a prime.

It is a super-2 number, since 2×135830781178637² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135830781108637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67915390589318 + 67915390589319.

It is an arithmetic number, because the mean of its divisors is an integer number (67915390589319).

Almost surely, 2^{135830781178637} is an apocalyptic number.

It is an amenable number.

135830781178637 is a deficient number, since it is larger than the sum of its proper divisors (1).

135830781178637 is an equidigital number, since it uses as much as digits as its factorization.

135830781178637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142248960, while the sum is 68.

The spelling of 135830781178637 in words is "one hundred thirty-five trillion, eight hundred thirty billion, seven hundred eighty-one million, one hundred seventy-eight thousand, six hundred thirty-seven".