147866705197 has 2 divisors, whose sum is σ = 147866705198. Its totient is φ = 147866705196.

The previous prime is 147866705141. The next prime is 147866705201. The reversal of 147866705197 is 791507668741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85237138116 + 62629567081 = 291954^2 + 250259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147866705197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147866705297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73933352598 + 73933352599.

It is an arithmetic number, because the mean of its divisors is an integer number (73933352599).

Almost surely, 2^147866705197 is an apocalyptic number.

It is an amenable number.

147866705197 is a deficient number, since it is larger than the sum of its proper divisors (1).

147866705197 is an equidigital number, since it uses as much as digits as its factorization.

147866705197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 147866705197 in words is "one hundred forty-seven billion, eight hundred sixty-six million, seven hundred five thousand, one hundred ninety-seven".