6161951518787 has 2 divisors, whose sum is σ = 6161951518788. Its totient is φ = 6161951518786.

The previous prime is 6161951518717. The next prime is 6161951518847. The reversal of 6161951518787 is 7878151591616.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6161951518787 is a prime.

It is not a weakly prime, because it can be changed into another prime (6161951518717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3080975759393 + 3080975759394.

It is an arithmetic number, because the mean of its divisors is an integer number (3080975759394).

Almost surely, 2^{6161951518787} is an apocalyptic number.

6161951518787 is a deficient number, since it is larger than the sum of its proper divisors (1).

6161951518787 is an equidigital number, since it uses as much as digits as its factorization.

6161951518787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 65.

The spelling of 6161951518787 in words is "six trillion, one hundred sixty-one billion, nine hundred fifty-one million, five hundred eighteen thousand, seven hundred eighty-seven".