247769155141 has 2 divisors, whose sum is σ = 247769155142. Its totient is φ = 247769155140.

The previous prime is 247769155019. The next prime is 247769155177. The reversal of 247769155141 is 141551967742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217665170116 + 30103985025 = 466546^2 + 173505^2 .

It is a cyclic number.

It is not a de Polignac number, because 247769155141 - 2¹³ = 247769146949 is a prime.

It is a super-2 number, since 2×247769155141² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247769155841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123884577570 + 123884577571.

It is an arithmetic number, because the mean of its divisors is an integer number (123884577571).

Almost surely, 2^247769155141 is an apocalyptic number.

It is an amenable number.

247769155141 is a deficient number, since it is larger than the sum of its proper divisors (1).

247769155141 is an equidigital number, since it uses as much as digits as its factorization.

247769155141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 52.

The spelling of 247769155141 in words is "two hundred forty-seven billion, seven hundred sixty-nine million, one hundred fifty-five thousand, one hundred forty-one".