53643140637659 has 2 divisors, whose sum is σ = 53643140637660. Its totient is φ = 53643140637658.

The previous prime is 53643140637637. The next prime is 53643140637677. The reversal of 53643140637659 is 95673604134635.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53643140637659 is a prime.

It is not a weakly prime, because it can be changed into another prime (53643140607659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26821570318829 + 26821570318830.

It is an arithmetic number, because the mean of its divisors is an integer number (26821570318830).

Almost surely, 2^{53643140637659} is an apocalyptic number.

53643140637659 is a deficient number, since it is larger than the sum of its proper divisors (1).

53643140637659 is an equidigital number, since it uses as much as digits as its factorization.

53643140637659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 146966400, while the sum is 62.

The spelling of 53643140637659 in words is "fifty-three trillion, six hundred forty-three billion, one hundred forty million, six hundred thirty-seven thousand, six hundred fifty-nine".