65500015154891 has 2 divisors, whose sum is σ = 65500015154892. Its totient is φ = 65500015154890.

The previous prime is 65500015154879. The next prime is 65500015154923. The reversal of 65500015154891 is 19845151000556.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65500015154891 is a prime.

It is not a weakly prime, because it can be changed into another prime (65500015150891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32750007577445 + 32750007577446.

It is an arithmetic number, because the mean of its divisors is an integer number (32750007577446).

Almost surely, 2^{65500015154891} is an apocalyptic number.

65500015154891 is a deficient number, since it is larger than the sum of its proper divisors (1).

65500015154891 is an equidigital number, since it uses as much as digits as its factorization.

65500015154891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080000, while the sum is 50.

The spelling of 65500015154891 in words is "sixty-five trillion, five hundred billion, fifteen million, one hundred fifty-four thousand, eight hundred ninety-one".