99994143653 has 2 divisors, whose sum is σ = 99994143654. Its totient is φ = 99994143652.

The previous prime is 99994143583. The next prime is 99994143703. The reversal of 99994143653 is 35634149999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99829457764 + 164685889 = 315958^2 + 12833^2 .

It is a cyclic number.

It is not a de Polignac number, because 99994143653 - 2⁸ = 99994143397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99994143253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49997071826 + 49997071827.

It is an arithmetic number, because the mean of its divisors is an integer number (49997071827).

Almost surely, 2^99994143653 is an apocalyptic number.

It is an amenable number.

99994143653 is a deficient number, since it is larger than the sum of its proper divisors (1).

99994143653 is an equidigital number, since it uses as much as digits as its factorization.

99994143653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28343520, while the sum is 62.

The spelling of 99994143653 in words is "ninety-nine billion, nine hundred ninety-four million, one hundred forty-three thousand, six hundred fifty-three".