61276873187 has 2 divisors, whose sum is σ = 61276873188. Its totient is φ = 61276873186.

The previous prime is 61276873111. The next prime is 61276873193. The reversal of 61276873187 is 78137867216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61276873187 - 2¹² = 61276869091 is a prime.

It is not a weakly prime, because it can be changed into another prime (61276873487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30638436593 + 30638436594.

It is an arithmetic number, because the mean of its divisors is an integer number (30638436594).

Almost surely, 2^61276873187 is an apocalyptic number.

61276873187 is a deficient number, since it is larger than the sum of its proper divisors (1).

61276873187 is an equidigital number, since it uses as much as digits as its factorization.

61276873187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 56.

The spelling of 61276873187 in words is "sixty-one billion, two hundred seventy-six million, eight hundred seventy-three thousand, one hundred eighty-seven".