196250617987 has 2 divisors, whose sum is σ = 196250617988. Its totient is φ = 196250617986.

The previous prime is 196250617957. The next prime is 196250618021. The reversal of 196250617987 is 789716052691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196250617987 is a prime.

It is not a weakly prime, because it can be changed into another prime (196250617907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98125308993 + 98125308994.

It is an arithmetic number, because the mean of its divisors is an integer number (98125308994).

Almost surely, 2^196250617987 is an apocalyptic number.

196250617987 is a deficient number, since it is larger than the sum of its proper divisors (1).

196250617987 is an equidigital number, since it uses as much as digits as its factorization.

196250617987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 196250617987 in words is "one hundred ninety-six billion, two hundred fifty million, six hundred seventeen thousand, nine hundred eighty-seven".