61732736287 has 2 divisors, whose sum is σ = 61732736288. Its totient is φ = 61732736286.

The previous prime is 61732736269. The next prime is 61732736297. The reversal of 61732736287 is 78263723716.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61732736287 - 2¹⁹ = 61732211999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61732736227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30866368143 + 30866368144.

It is an arithmetic number, because the mean of its divisors is an integer number (30866368144).

Almost surely, 2^61732736287 is an apocalyptic number.

61732736287 is a deficient number, since it is larger than the sum of its proper divisors (1).

61732736287 is an equidigital number, since it uses as much as digits as its factorization.

61732736287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 52.

The spelling of 61732736287 in words is "sixty-one billion, seven hundred thirty-two million, seven hundred thirty-six thousand, two hundred eighty-seven".