97439543699 has 2 divisors, whose sum is σ = 97439543700. Its totient is φ = 97439543698.

The previous prime is 97439543683. The next prime is 97439543753. The reversal of 97439543699 is 99634593479.

It is a weak prime.

It is an emirp because it is prime and its reverse (99634593479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97439543699 - 2⁴ = 97439543683 is a prime.

It is not a weakly prime, because it can be changed into another prime (97439543599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48719771849 + 48719771850.

It is an arithmetic number, because the mean of its divisors is an integer number (48719771850).

Almost surely, 2^97439543699 is an apocalyptic number.

97439543699 is a deficient number, since it is larger than the sum of its proper divisors (1).

97439543699 is an equidigital number, since it uses as much as digits as its factorization.

97439543699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 198404640, while the sum is 68.

The spelling of 97439543699 in words is "ninety-seven billion, four hundred thirty-nine million, five hundred forty-three thousand, six hundred ninety-nine".