61510496771 has 2 divisors, whose sum is σ = 61510496772. Its totient is φ = 61510496770.

The previous prime is 61510496759. The next prime is 61510496791. The reversal of 61510496771 is 17769401516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61510496771 - 2¹⁴ = 61510480387 is a prime.

It is not a weakly prime, because it can be changed into another prime (61510496791) 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, 30755248385 + 30755248386.

It is an arithmetic number, because the mean of its divisors is an integer number (30755248386).

Almost surely, 2^61510496771 is an apocalyptic number.

61510496771 is a deficient number, since it is larger than the sum of its proper divisors (1).

61510496771 is an equidigital number, since it uses as much as digits as its factorization.

61510496771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 61510496771 in words is "sixty-one billion, five hundred ten million, four hundred ninety-six thousand, seven hundred seventy-one".