55135131193 has 2 divisors, whose sum is σ = 55135131194. Its totient is φ = 55135131192.

The previous prime is 55135131131. The next prime is 55135131203. The reversal of 55135131193 is 39113153155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29354654224 + 25780476969 = 171332^2 + 160563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55135131193 is a prime.

It is not a weakly prime, because it can be changed into another prime (55135131593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27567565596 + 27567565597.

It is an arithmetic number, because the mean of its divisors is an integer number (27567565597).

Almost surely, 2^55135131193 is an apocalyptic number.

It is an amenable number.

55135131193 is a deficient number, since it is larger than the sum of its proper divisors (1).

55135131193 is an equidigital number, since it uses as much as digits as its factorization.

55135131193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30375, while the sum is 37.

The spelling of 55135131193 in words is "fifty-five billion, one hundred thirty-five million, one hundred thirty-one thousand, one hundred ninety-three".