197308398087 has 6 divisors (see below), whose sum is σ = 285001019472. Its totient is φ = 131538932052.

The previous prime is 197308398011. The next prime is 197308398149. The reversal of 197308398087 is 780893803791.

It is not a de Polignac number, because 197308398087 - 2¹⁴ = 197308381703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197308398787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10961577663 + ... + 10961577680.

It is an arithmetic number, because the mean of its divisors is an integer number (47500169912).

Almost surely, 2^197308398087 is an apocalyptic number.

197308398087 is a deficient number, since it is larger than the sum of its proper divisors (87692621385).

197308398087 is a wasteful number, since it uses less digits than its factorization.

197308398087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21923155349 (or 21923155346 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 197308398087 in words is "one hundred ninety-seven billion, three hundred eight million, three hundred ninety-eight thousand, eighty-seven".