61254166871 has 2 divisors, whose sum is σ = 61254166872. Its totient is φ = 61254166870.

The previous prime is 61254166837. The next prime is 61254166891. The reversal of 61254166871 is 17866145216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61254166871 - 2¹⁴ = 61254150487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61254166891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30627083435 + 30627083436.

It is an arithmetic number, because the mean of its divisors is an integer number (30627083436).

Almost surely, 2^61254166871 is an apocalyptic number.

61254166871 is a deficient number, since it is larger than the sum of its proper divisors (1).

61254166871 is an equidigital number, since it uses as much as digits as its factorization.

61254166871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The spelling of 61254166871 in words is "sixty-one billion, two hundred fifty-four million, one hundred sixty-six thousand, eight hundred seventy-one".