39545998097 has 2 divisors, whose sum is σ = 39545998098. Its totient is φ = 39545998096.

The previous prime is 39545998091. The next prime is 39545998109. The reversal of 39545998097 is 79089954593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36136489216 + 3409508881 = 190096^2 + 58391^2 .

It is a cyclic number.

It is not a de Polignac number, because 39545998097 - 2⁶ = 39545998033 is a prime.

It is not a weakly prime, because it can be changed into another prime (39545998091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19772999048 + 19772999049.

It is an arithmetic number, because the mean of its divisors is an integer number (19772999049).

Almost surely, 2^39545998097 is an apocalyptic number.

It is an amenable number.

39545998097 is a deficient number, since it is larger than the sum of its proper divisors (1).

39545998097 is an equidigital number, since it uses as much as digits as its factorization.

39545998097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110224800, while the sum is 68.

The spelling of 39545998097 in words is "thirty-nine billion, five hundred forty-five million, nine hundred ninety-eight thousand, ninety-seven".