213740537707 has 2 divisors, whose sum is σ = 213740537708. Its totient is φ = 213740537706.

The previous prime is 213740537669. The next prime is 213740537729. The reversal of 213740537707 is 707735047312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213740537707 is a prime.

It is not a weakly prime, because it can be changed into another prime (213740537797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106870268853 + 106870268854.

It is an arithmetic number, because the mean of its divisors is an integer number (106870268854).

Almost surely, 2^213740537707 is an apocalyptic number.

213740537707 is a deficient number, since it is larger than the sum of its proper divisors (1).

213740537707 is an equidigital number, since it uses as much as digits as its factorization.

213740537707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864360, while the sum is 46.

The spelling of 213740537707 in words is "two hundred thirteen billion, seven hundred forty million, five hundred thirty-seven thousand, seven hundred seven".