135375621853 has 2 divisors, whose sum is σ = 135375621854. Its totient is φ = 135375621852.

The previous prime is 135375621769. The next prime is 135375621877. The reversal of 135375621853 is 358126573531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129465394969 + 5910226884 = 359813^2 + 76878^2 .

It is a cyclic number.

It is not a de Polignac number, because 135375621853 - 2¹⁷ = 135375490781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135375621797 and 135375621806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135375628853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67687810926 + 67687810927.

It is an arithmetic number, because the mean of its divisors is an integer number (67687810927).

Almost surely, 2^135375621853 is an apocalyptic number.

It is an amenable number.

135375621853 is a deficient number, since it is larger than the sum of its proper divisors (1).

135375621853 is an equidigital number, since it uses as much as digits as its factorization.

135375621853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268000, while the sum is 49.

The spelling of 135375621853 in words is "one hundred thirty-five billion, three hundred seventy-five million, six hundred twenty-one thousand, eight hundred fifty-three".