155544205032131 has 2 divisors, whose sum is σ = 155544205032132. Its totient is φ = 155544205032130.

The previous prime is 155544205032127. The next prime is 155544205032143. The reversal of 155544205032131 is 131230502445551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155544205032131 - 2² = 155544205032127 is a prime.

It is a super-2 number, since 2×155544205032131² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155544205032121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77772102516065 + 77772102516066.

It is an arithmetic number, because the mean of its divisors is an integer number (77772102516066).

Almost surely, 2^{155544205032131} is an apocalyptic number.

155544205032131 is a deficient number, since it is larger than the sum of its proper divisors (1).

155544205032131 is an equidigital number, since it uses as much as digits as its factorization.

155544205032131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 155544205032131 its reverse (131230502445551), we get a palindrome (286774707477682).

The spelling of 155544205032131 in words is "one hundred fifty-five trillion, five hundred forty-four billion, two hundred five million, thirty-two thousand, one hundred thirty-one".