197085379613 has 4 divisors (see below), whose sum is σ = 197241922080. Its totient is φ = 196928837148.

The previous prime is 197085379567. The next prime is 197085379651. The reversal of 197085379613 is 316973580791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 197085379613 - 2⁶ = 197085379549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197085379663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78269345 + ... + 78271862.

It is an arithmetic number, because the mean of its divisors is an integer number (49310480520).

Almost surely, 2^197085379613 is an apocalyptic number.

It is an amenable number.

197085379613 is a deficient number, since it is larger than the sum of its proper divisors (156542467).

197085379613 is a wasteful number, since it uses less digits than its factorization.

197085379613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156542466.

The product of its (nonzero) digits is 8573040, while the sum is 59.

The spelling of 197085379613 in words is "one hundred ninety-seven billion, eighty-five million, three hundred seventy-nine thousand, six hundred thirteen".