1651460663591 has 2 divisors, whose sum is σ = 1651460663592. Its totient is φ = 1651460663590.

The previous prime is 1651460663543. The next prime is 1651460663609. The reversal of 1651460663591 is 1953660641561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1651460663591 - 2¹⁸ = 1651460401447 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1651460663191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825730331795 + 825730331796.

It is an arithmetic number, because the mean of its divisors is an integer number (825730331796).

Almost surely, 2^{1651460663591} is an apocalyptic number.

1651460663591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651460663591 is an equidigital number, since it uses as much as digits as its factorization.

1651460663591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 53.

The spelling of 1651460663591 in words is "one trillion, six hundred fifty-one billion, four hundred sixty million, six hundred sixty-three thousand, five hundred ninety-one".